Kenryoku_Maxis on 03 January 2010
I'd just go get a PS3. 3/4 the games that were once exclusive to XBOX360 seem to be getting ported to XBOX360, with enhancements. And the rest are either already multi-platform for the PS3 or on PC.
Plus, as you are already experiencing, the XBOX360 has one of the highest fail rates of a console in history (not counting really bad consoles like the Jaguar).
Six upcoming games you should look into:
Essay Pro