This might influence me to get another 360 someday, but it's still tough to choose it over a PS3. Go to Pandora/Youtube during get togethers for convenient (and free) online entertainment. Free online gaming with dedicated server support on nearly all exclusives. Sure it's not as big as XBL but it does seem to have tighter quality control. Sony's exclusives just keep coming in a wide variety, all using custom game engines vs UE3 for nearly everything. Speaking of which Gears and whatever's next for Halo seem to be the only 360 exclusives left.
Then of course there's Blu-ray which is good for movies and games which will only be getting larger. As for the longer load time argument, the PS3 version of Oblivion loaded faster than the 360, and God of War 3 runs seamlessly from boot up to end credits without an HDD install, so both multi plat and exclusive developers are perfectly capable of finding solutions there. Then Valve chooses to implement Steam on PS3, because they consider it a more open platform than the 360. Kinda ironic how the PS3 is more like a PC than the 360, which Microsoft seems to apply more of an Apple-like philosophy to on the business side.
Simply put a PS3 is now $300, a 360 with an HDD is now $300, but you're still getting more for the money with a PS3.