XBOX 360 owner for 4 years here..
If I was looking at purchasing a console now, it'd be the PS3. The only reason I still have my Elite is that buying games and Guitar Hero (again) ontop of a new console, while I already have them, will be farking expensive. Main reasons for me getting a PS3 is the Blu-ray player and free online gaming (huge pluses). Also, I think the XBOX controller is better suited (and better weighted) for gaming. The times I've played PS3 I always find the controller is too light and the analog sticks are in weird positions for my thumbs when playing FPS, but hey, if I played more PS3 I'd get used to it.
Both of them connect without hassle to a PC so they can stream media. Kinect will be useless until next year sometime, for the simple fact that there aren't enough good games and the FPS controls suck (that will change). Move, well, I don't know much about it other than its a wand (ala Wii) and it will also be useless until next year.
Exclusives are hit and miss. Neither console has better exclusives imo; I'd say they're pretty even. And right now I'd take Uncharted over Halo any day.
So search around for the better deal. Its the holiday season and I'm sure you'll find great deals on either console, so go with one that fits your budget. Take a walk into one of those specialist gaming stores with consoles out where you can play them, and spend a few hours on each.