AFAIK, the PS3 doesn't stream netflix, but there may be plans to implement that in the future, perhaps via FW, who knows.
All BDPs today are able to upscale. The Oppo just does it best of the three. However, a decent bluray on any of them will blow away a decent DVD on any of them.
For PQ and AQ on BD, it is highly unlikely that you could not discern any difference. And that's even if you have a Signature 141 panel, or a JVC RS-35 blown up on a 12 ft wide screen. DVD, you probably could tell a bit of difference on the 12 ft wide screen. You probably wouldn't care at that point though, and exclusively load BDs.
This is a pretty easy choice.
Games, there's only one.
Netflix, there's only one.
SACD+DVDA, there's only one.
The above criteria is what I would choose on. I wouldn't worry about PQ/AQ otherwise.
If you don't care about any of the above, you can save a lot with a Pana BD60. That's what I use with a JVC projector coupled to a huge screen in a very dark room.