Hi: I'm considering switching from my Panasonic to a ps3 to play games on my tv(plasma). I have a few questions regarding video and audio quality

1) Watching blu-ray's which player will reproduce the "best" pic?

2) How good is the ps3 at up converting DVD’s?

3) Audio quality through the ps3 again good/bad quality?

Thanks for the help.Any other advice will be greatly appreciated