Go 360, I own all three systems (don't ask), and the 360 is by far my favorite. Although all my dvd's I watch on the PS3 since it is easier, MUCH MUCH QUIETER, and I trust it more for reliability, plus I have the remote, not to mention I have about 40 Blu-Ray's. XD
I didn't bother reading the thread (too long for me :|) but the new 360 (with the 60GB HDD) won't be anything different than this one now (20 GB), except for the HDD. Go get it right now, if you already haven't.
Also, if you do get it/got it, I suggest buying Mass Effect, Oblivion, Call of Duty 4, NHL 09 (releases Sept.), and GTA IV. All are excellent games.