I already have a Z-5300e Logitech 5.1 sound system, plus a X-Fi ExtremeGamer Fatal1ty Pro I got last week - I'm thinking of getting headphones for music/gaming - my budget is 75$-100$.....as long as I stay around 100$, I'm fine.

 I primarily listen to Trailer/Soundtrack Music, of movies and games, and also high-end trailer studios such as Immediate Music and Future World Music, with a moderate amount of classical music, and a light bit of alternative rock, pop, and trance/techno/new age thrown in. I also do some FPS gaming (Quake4,HL2, CS:S, Bioshock).

There are 3 models which seem to fit into my budget - these links are just for reference, not pricing

Audio-Technica ATH-AD700 (can be found for ~$100)

HD280 PRO (can be found ~80$)
http://www.newegg.com/Product/Prod [...] 6826106328

HD555 (can be found ~90$)
http://www.newegg.com/Product/Prod [...] &Tpk=hd555

I will be mostly using these at home, in a quiet environment, but would like somewhat good passive noise cancellation when I'm traveling on a bus or a plane...also at rowdy parties...

As you can see, these are mostly for music, and some gaming with audio-intensive games.
Any suggestions that fit my music/gaming criteria tastes? -

I'm not sure about the ones you suggested, but if you're alright with earphones, I would recommend a set of Shure E2C 'noise isolation' earphones. I personally own one, and I think they're really nice, and they're less than 100 bucks. Again, if you're looking for headphones instead, just ignore my ramblings .
 
http://www.newegg.com/Product/Prod [...] 6826159701

Yup - I already have decent earphones for my iPod - Sennheiser CX300 ~ $60-70..

Looking for headphones.  thanks anyway!

I have the hd555 and they are excellent. They will pair nicely with your xfi. Their durable feel and sound quality make them a good pair for more than just careful listening in the sanctity of your own room but also for the demands of a lan party. I specifically wanted open ear phones so that i could wear them and still know what people around me were saying (or trashtalking). I can't tell you what makes the hd555 more expensive than the 485's, however i prefer the style of the 555's.  
 
One last thing, the 555's are incredibly comfortable. They fit over your ear so you dont get a sore ear after a few hours.

Bump....or is it that toms doesn't have a big headphone audiophile group?

I use a pair of Bose Tri-port headphones.  I really like them but they cost a little over 100 bucks.  I'm not an audio expert or anything but these headphones along with my X-fi sound card sure sound better than my last pair of generic headphones and onboard sound...
 
You made it clear you are on a budget but if you can find away to spend an extra 30 bucks or so you won't regret it.

I'm not sure what to make of your requirements.  There's a number of conflicting directions.  
 
For FPS gaming, I really need a mic for communicating with teammates.  
 
For on the road, durability is the most important.  
 
The best seat of headphones in that range on my desk now, are a set of sony mdr-v600, which is in the low end for you.
 
I favor comfort for long wearing over even audio properties, and the bass is comparatively weak.  Fortunately I don't listen to much booty base at work.

I also use the HD-555's they are awesome best pair of headphones ive ever owned. They plug-in direct into the front IO on my Fatal1ty.
 
I shyed away from the HD-280Pros as they are closed headphones and that meaning they are good for monitoring but there bass will suffer a little because of this. Which i wanted more bass for music listening.
 
The HD-555's sit nice on the head and leave them on for hours without that uncomfortable feeling. As soon as i saw your thread name i though he needs HD-555's and i go into the topic and see you have already been looking at them good work get them i garentee youll be happy with them

I have a set of Speed Link 5.1 surround cans, a great addition to my gaming x-fi. I to have the speakers listed, but after the bride and kiddies are in bed, I need a "quiet" solution to game with, and these sound fabulous.

since u're looking for some passive noise cancellation i'de suggest you to get an closed headphone instead of a open one, cause since you're going to travelling with then, "they let outside noise in and inside noise out (so they're not suitable for use in noisy environments, or near people who don't want to hear a tinnier version of what you're hearing" just got this from a review =p . i own an audio technica ath a500 head (they're closed ^^) , it's pretty good for its price  its just over $80.
 if u're looking for a small one, more "portable" you can try the Bose Tri-port.

How  bad is the sound leakage/noise blocking on opens, such as hd555? - is it really that bad?
 
I  heard more goods for hd555 than hd280pro...
 
I'm not going to travel a lot, just the rare vacation/bus/party..so a constant sound cancellation isn't neccesay.
 
How does Audio-Technica lowerends compare to these Senns?

What are you plugging the headphones into when traveling? cause youll find on an ipod or something, the port wont drive the headphones all that well (doesnt have sufficient power output) so you wont be able to go as loud as say with an amp or X-fi

i d add to the list the akg k81 which can be had for less than 100 for sure
supposedely they are nice for the money
and they are closed
if you absolutely want senns then hd555 seems good to me
may i suggest www.head-fi.org (the reference in headphones on the net)

I know these don't really compare with the Senn's and the like but I recently picked up a set of the new Logitech 350's the other day for AUD$50 (retail AUD$80) and they are fantastic for the money, really clear sound and good sound cancellation (breathing etc) across the mic's, and for watching movies or gaming the sound is really quite good. The only problem is that they are usb and as such do not run off your soundcard as they have their own processor in them, however for the price I'm not to fussed. If I want to get really good sound I never use my headphones and just listen to my z2300's on the xtremegamer.
 
Cheers
Lazarus

About external noise and leakage well i really can't say much about it, since all my cans where closed ones, if you listen closed ones on high levels you certainly will have some leak (sure they will be less than open ones).
 You might consider try them before buy, since closed and open my have a different sound, each person have it's own taste. What sounds good to me, might not be so good for you.  
 
And about lower end you're talking about ?  
 
might want to take pidesd suggestion and visit at www.head-fi.org a good source for headphones if not the best one .

let your ears do the work bro. Never order speakers of any sorts off the net until at least hearing them live in a good listening enironment. Get the bike out...catch a bus...borrow moms car...whatever, take a trip and listen to the headphones/speakers live....
good luck and trust your ears...not your wallet

 
my dad is an audio expert and he LOVESSS his Bose Tri-port headphones. Also I'm a ocd'ish musician and when it comes to audio im pretty picky and I have to say the Tri-port are pretty amazing. So there must be something to them

To expensive for my tastes! (200$?)
 
Anyway, I'd like to stick with Senn..And yes, I'll plug it into a iPod - heard the ohm level was friendly though...

I like the true 5.1 types myself:
http://www.newegg.com/Product/Prod [...] 6826502008
But it will use 4 connections on the soundcard (including mic). Look up reviews on newegg.

Anyway, I'd like to stick with Senn..And yes, I'll plug it into a iPod - heard the ohm level was friendly though...
 
@DeusEx
 
They are ohm friendly but ull find an amp will power the senn's better than an ipod will, the ipod dont have the juice.... like plugging 200w RMS speakers into a 100W RMS Amp.

if you want