After reading about the making of GT4 for PS2 and the current availability of SoulCalibur II, I purchased a PS2 myself. It doubles as my DVD player. What I noticed/read about the PS2 is that Sony changed some of the hardwares. First of all, the DVD player has progressive scan capability. Which means nothing unless you have a HDTV or digital TV. Second, Sony took out the iLink port since it added more manufactoring cost and not many people use it. Third, the infer-red port for the remote control is built in, instead of needing another IR adaptor. Lastly, the fan that cools the system is much quieter than the previous PS2. Small changes make the difference.
I have the console hooked up with stereo audio/component video to my TV, and outputed the TV audio to my stereo. so far it sounds and looks great. Much easier to watch DVDs on the PS2 than through my computer.
As for SoulCalibur II, it reminded me of the reason why I bought PS1 before (SoulBlade). This weapon-based one-on-one 3D fighting game is just awesome.