I agree that B/C isn't a big problem, but thats just me. I didn't trade in my Xbox for a 360, so if I ever want to play old Xbox games I play them on Xbox. Besides (like someone here said) game data doesn't transfer, so I don't want to have to start a game over just because it looks a tiny bit better. The PS1 and PS2 had memory cards that worked for each one, (but you needed a PS2 memory card for PS2 games, which sux) so you could trasfer your data. Me personaly, I wouldn't trade any game system I had until I was completely done playing it. I still have a SNES!