My other experiences with SACD players are the same as AvFan. I had a Pioneer 45A and the 980H. I never cared for the 45A SACD playback. the 980H was better and being unable to do a direct A/B comaprison I would say they are very close if not the same.

I have to agree with gonk about the 83's analog section, I definitely feel the analog audio is better than the Sony S550.

And the Oppo's operation is so much nicer from load times to display to setup.
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Outlaw 990/7700
SVS 20-39 PC +
SVS MTS-01 towers, MCS-01 center, MBS-01 surrounds
Behringer A500
Samsung PN58A650, DirecTV HR-20 700
Sony CDP-545, Phillips CDR 765
Oppo BDP-93, Panasonic DMR E515
Technics SL-DL5
Squeezebox 3
Remote Harmony One