I currently own a PS2 and a Wii. I always assumed I'd get a PS3 when they came out because the PS2 has so many great games. But I initially had sticker shock, and then good games were slow to come out, and then they cut backwards compatibility out. Needless to say, Sony hasn't done much to encourage me to upgrade, yet. However, with rumors of price drops, I'm starting to consider it or an Xbox 360.
Here's how I view the two choices:
Xbox has a more complete game library and I hear it's better online, but I'm not convinced even the new units won't RROD--and they are loud. I won't buy the arcade unit (wired controllers, no HD), and I need wifi because my tv and router are in different rooms, so I view Xbox as the same price.
PS3 has blu-ray, I've heard better build quality, and I think there's probably enough games out now to keep me happy. My favorite PS2 games are Kingdom Hearts, FFX, and Gran Turismo.
I'm still leaning toward PS3, but am still willing to go with Xbox. So--convince which choice is better.