acegazda - SR60s are a good recommendation, but he's looking for more gaming-friendly headphones. SR60s are bad in that respect, due to a tiny soundstage. About those sennheisers... I think you meant the HD 280 Pro headphones, which are also bad for gaming, but for a different reason - they have retarded bass. Seriously, gunshots will sound like pots and pans with the HD280.
As for my recommendation... the out of your budget rec is the Audio-Technica A500. These are excellent all-around headphones, and have a big soundstage so they're great for gaming. If you look for them used you'll find them closer to your budget.
The recommendation at your budget is the AKG K81DJ. These are closed headphones that have lots of bass and sound great to boot, and if you look in the right spots (I think buy.com has them for something like $55 or so) you can get them in your budget. Once again, these are closed, so they won't leak sound in and out.
The recommendation under your budget is the Sennheiser PX100. These are open headphones, which means they'll leak sound out, but it should be okay depending on how loud you listen to whatever you listen to. They have an OK soundstage, and are pretty good across the board (bass, mid, treble are all average). Newegg stocks them, and they have a good price for them.
Pick away!