There are already 32 pages of stuff over on AVS Forum comparing the OPPO BDP-83 to other Bluray Players including the PS3. I have a PS3 as well as another older Sony BR player. The OPPO beats both of them in a number of areas. I think you will find a large number of new OPPO BDP-83 owners have PS3s as well.
Better PQ for DVDs, OPPO upsamples with the very best, some say the BEST
Better SQ for Bluray - OPPO decodes all Codecs, and I mean all
Many even say Better PQ for Bluray
Better SQ for SACD and DVDa
Better control via really nice OPPO remote
More flexible when it comes to playback of all formats
Better DACs
7.1 Analog outs
Start-up speed....the OPPO wins again...surprise
Better customer service from OPPO -Sony has infamous CS known as none.
I now use my PS3 for gaming. It is a gaming computer that happens to play Bluray and for a long time it was probably the best bluray machine out there when you considered everything it does or could do. But there is a new sheriff in town and his is named OPPO:bowdown:
Seriously, if you are interested, the thread over at AVS Forum in the Bluray section will tell you everything you want to know....and even some stuff you didn't