Which headphone/headset whould I get?

My current headset mic died quite awhile ago, and I'm going to return it (thank god I got the warranty) but they no longer carry the item, which was worth $55 at the time. And I am wondering which headphones/headset I should get, since I am not to knowledgable in this catoragory and I'm lacking in the money department. And just so you know I was planning on exchanging these headphones for new ones and asking Newegg if they let me pay the difference for some of the better headphones, and I have $50 on me making for a total of $105 I can spend. I use the headphones constantly, probably 8hours a day or more for music, games, Ipod if possible, etc and I like good sound quality since I can hear the high pitch hiss noise from the cheap headhones/earbuds quite easily which drive me insane, not to mention I got spoiled by the 2 plantonics headsets I have owned in the past.

Here is what I currently have

Headset PLANTRONICS .Audio 550 (USB, I heard these don't use the sound card because it has one, not sure how true this statement is. But it be nice if someone clarified that for me)
http://www.newegg.com/Product/Prod [...] 6826265014

I have no dedicated sound card, just the integrated one on the motherboard
http://www.newegg.com/Product/Prod [...] 6813188017

Wireless headphones (I like the idea of roaming around the house, its a nice plus. And I also like your opinion on this, if wireless headphones are worth using)

SENNHEISER RS110
http://www.newegg.com/Product/Prod [...] 6826106028

SENNHEISER RS120
http://www.newegg.com/Product/Prod [...] 6826159406

Wired headphones/headset

SENNHEISER PC151 3.5mm
http://www.newegg.com/Product/Prod [...] 6826106157

Creative FATAL1TY 3.5mm
http://www.newegg.com/Product/Prod [...] 6826158051

SENNHEISER HD 280PRO 3.5mm
http://www.newegg.com/Product/Prod [...] 6826106328

I would like to preferably be left with some money left over for summer which is why most of them are below $70, but I threw in the last Sennheiser HD280 pro due to seeing all the good reviews on it and how I couldn't really dig up anything bad about it. But if you recommend the HD280's could you also tell me what would your next choice since I'm not sure I want to spend that much money on a pair of headphones yet. And feel free to make recomendations.

And lastly is there anyway to boost my 3.5mm microphone, since when I first got it on my laptop it was able to pick up my voice across the room on my laptop, but now days it has to be in front of my face or taped to the headphones to pick up my voice despite the fact that I boosted the volume on it all the way up in windows. And all realtek audio manager does is provide a nice interface to that.

Thank you for any and all replies.

Thanks for your input I take a look into the EH350's as well.

Agreed on that, which is why I would recommend the Sennheisers. Even the lower end models sound far better than the average gaming headset, and are a great investment IMHO.