As far as quality of Blu-ray playback goes, there are few if any players that match the PS3 for load speed.
That isn't true anymore. Nearly all players, even the least expensive, are as fast as the PS3 to start discs now. Companies realized people wanted players to load faster, so now they do, but it took them 3-4 generations of players to get to where the PS3 was from the beginning.
I sold my PS3 as a mini protest and replaced it with an oppo bdp-93. I didn't see or hear any significant improvement with the swap. Netflix playback on the PS3 trumped all other devices I've used for it.
Agreed, if you stream via netflix, the PS3 is easily the best device for it, and currently the
only one capable of streaming 5.1 audio. PQ won't be dramatically different among BD players, so I don't think that would make much difference. I've owned/own a few different BD players and PQ is pretty similar across all of them. Audio wise, if you are using HDMI, there won't be
any difference. Analog audio is a very different story.