I'll join Ghandi in PS3 support. I know K-Man and Pyro are on the other end of the spectrum, but my own preferences dictate a very different situation.
My 360 has collected dust ever since I got a PS3. Superior online framework? I have to pay money to play multiplayer games on 360 when I can play my PS3 games online for free. Oh, and my 360 doesn't even go online because I'd have to blow money on a fucking dongle just to get wireless access, which my PS3 has for free. My 360 also doesn't have a hard drive. Admittedly that's my own fault for being stupid enough to buy one of the lesser models, but if I want to upgrade to a bigger drive on the PS3, I don't have to pay far more than the storage is actually worth, I can go buy a laptop drive at a reasonable price, install it, and be done with it. Not so much with the 360, which botched its own interface ideas so badly they had to start giving people deals on storage just so they could install the fucking updates. Plus I don't have to worry about my PS3 exploding for no apparent reason, and while I have several 360 games that have refused to work or have had crashing issues, my PS3 hasn't so much as hiccuped. I'd mention the free software that lets me copy movies and junk to my PS3, but there might be a 360 equivalent of that. I really don't know since I don't have $100 to blow on the privilege.
Yes, Home sort of sucks. And yes, there's still some work to be done with PSN, etc. I'm totally a convert regardless. The 360 has a bigger library, but I don't think the quality argument will remain valid for long. Can you live without Gears of War and Fable 2? Then get a PS3. All things being equal (which they really aren't depending on your disgust with having to pay for shit you shouldn't have to), at least you know it won't melt. A guy I know at work is on his fifth 360 right now. It just came in the mail 2 weeks ago, having died right before he could start playing Fallout 3.
EDIT - Oh, and one of my consoles has an HDMI port. The other doesn't. Can you guess which is which?