I'll stick with PS if I go to the next gen.
I was burned WAY too badly with the 360 to even consider it. I know most people haven't had issues, and that's fine. but I went through 3 of them in about 13 months. Full, new replacement each time, but on the final new one, I sold it to a guy my wife works with and took the $ to get the PS3.
Life is 99% inspiration, 1% Perspiration, and 1% Attention to Detial.