It ENTIRELY depends on preference.
No fanboy remarks please, thanks.
Xbox 360
PROS: Large memory (up to 250GB), vast and solid online service (Xbox Live) and many of those large titles (like CoD), kinect controller-free gaming, netflix movies etc. also much cheaper than the PS3 (at least in Singapore)
CONS: No web browser, Xbox Live is pretty limited if it's the silver (or free) version, no blu-ray drive + support, overheating factors (however it has been solved with the 360 slim), games are 75% region locked and kinect's library is extremely weak.
PS3
PROS: Large memory (if i'm not wrong there's even a 320GB), many large titles (like again, CoD... I can't think of another example), blu-ray support + movies, ACCESS NetFront browser, ALL games are region free to a certain extent.
CONS: Choppy online store, blu-ray movies are region locked.
BOTH CONSOLES
PROS: enjoyable, easy to use, great games.
CONS: both consoles lack quite a lot in first party games, although their titles are overall amazing (e.g xbox has halo and ps3 has killzone)
That's how I think about these consoles. I have made it in a pro/con way such that it would be as less 'fanboy-ish' as possible. It's entirely your choice.
EDIT:
JinTrigger said:
Ok so long story short, my friend is offering me a deal. He wants my iphone and he will give me his slim ps3. Now my questions is should I keep the PS3 or should I sell it and get a 360. There are a lot of factors effecting my decisions so I will list them so that maybe you tempers can help me out.
Factor #1 - Features/Selection of Games
Factor #2 - Sony's Situation (PSN being hacked)
Factor #3 - Backups and the ability to play online
I'll probably end up doing the trade this weekend, so help me in my decision making.
Seeing that you care more about online and security, I personally voted for 360.
360 also has game ports (CoD? my gosh what other examples are there!?) which the PS3 also has. Sony though has invested more in first party titles, and they're overall pretty good. (Yakuza, Killzone, LBP etc)