1080p should be sufficient for most mortals.
I have the PS3 for pretty much just BluRay and exclusives. Most multiplatform games I prefer the 360.
A few things I would do, buy some BluRay titles. Some games, I personally go through the Gamespot top games and just go through the games there.
I would recommend signing up for Gamefly or some sort of rental service. I've used Gamefly, but their shipping centers, all three of them seemed to be located to make them strategically the farthest away possible from me (MN). They have a shipping center in Florida though, so you'd probably get your games overnight, just like I do with Netflix who has a shipping center in Minneapolis. Now I've signed up with Gameznflix. 3 out at a time for less than $20 as opposed to GF's 2 at a time for a round $22. You can also rent Bluray movies the same way you rent games at Gameznflix. The only caveat is that the game titles aren't as big as GF, but that doesn't matter to me since at 3 at a time, I usually am still playing a game before I move on to the new ones.
If you decide to sign up for Gameznflix, tell me your e-mail add for apparently a 1 month free subscription, and a I get 1 month free. woot!
Oh yeah, turn on folding on your PS3 and join the folding team.