I'd especially go with the seasonic. there are higher wattage ones in that series that are still under $100 too.
the TT ones are a little higher power but the quality may be slightly less than the seasonic ones.
Thanks for both of your replies.
I'm having trouble finding the SeaSonic you posted outside Newegg but I managed to find this SeaSonic 80Plus M12II 620 on amazon: http://www.amazon.com/dp/B003HE260I/?tag=pcpapi-20
How do you say it compares to a Corsair CX600 in terms of reliability?
I'm going extra safe on quality because I won't be able to get a replacement if it fails one year down the road. Sorry for that.
basically, it'd be REALLY out there for any of these to fail. I have a thermaltake TR2, which is WAY lower "quality" than these, but I have no doubt that it'll last at least 5 years (I've had it for 1.) To put it in perspective, mine isn't even 80+certified. If anything, (imo) seasonic and pc power and cooling are the best, corsair and antec are also really good, thermaltake i fine too. some other brands are just fine too.