This really does get posted about once a week, and you did neglect to give us much background to help you decide.
PS3:
- FF13 will look a little better
- Blu-ray
- Don't need to pay $40/year fee for online and Netflix streaming
360:
- Currently get 250 GB of disk space instead of just 120 GB
- 2-3 times as many people playing online for most cross-platform games
Besides that it's:
- Which controller do you prefer?
- What other games on each console would you play, especially exclusives?
- Which big, evil, soulless corporation do you hate more?
Price is $300. You could get the 360 arcade version but you want the Eilte so you can load the game on the hard drive instead:
- DVD-ROM screaming in your console as you play is unpleasant.
- Load times are longer
- No Netflix with just the Arcade (I think) <-- not true, arcade is fine you just need Live Gold at $30-40/year