Most of the you always wonder what to buy, a PS3 console or an Xbox 360 console, here is my opinion...
Well, all depends in which system you have more friends to play online with, this factor is one of the most important, for me. Also depends in what games do you prefer because they are exclusives. PS3 got a long line-up of exclusive games like Uncharted, Killzone, God of War and many more, instead the xbox that got a bit less, the first ones was Gears of War and Halo, but the Xbox got more virtual games like Minecraft or Spelunky. The life expectancy of the console is also important, you know that the Xbox got the famous
RED RING OF DEATH!!!!!!, but in the slim version Microsoft fixed that problem, and the PS3 is more reliable because is more protected. The controller of each consoles are almost the same but the Xbox one is more confortable. And now the most important thing, the online system, in this factor the Xbox got a faster system but you have to paid for it, instead the PS3 got a free system but is less protected and is easier to be hacked.
Conclusion: For me, the two are the same, only many aspects are different, this all depends in your personal opinion.