As you have not said hand held i assume you want a home one , so i would say if you want more life span of the console + free internet + pc like net browsing experience & best motion sensing gaming i suggest PS3
Xb0x360 is a good buy but in terms of life span i can't really say much as dual layer DVD's will soon reach their limit
i own both of them , so i would say please buy PS3
Some goods of both consoles
Playing sports games [ Fifa Test ] - if you will buy the console according to the games you play then in terms of Fifa it is best played on Xbox360 , i assume same goes for most other sports games , coz having the left stick just bellow LB [ L1 For PS3 Controller ] is way better than with PS3's controller , as the Left stick & right stick on the PS3 Controller are at the extreme bottom of all keys so in most sports games which require the use of LB / L1 , our hand tends to hurt after a couple of hours of continuous gaming
Playing 3D Fighting [ Mortal Kombat test ] - The reason i have choosen this game is it requires a lot of use of the directional pad , to play such fast games PS3 Controller is way better to do combos than the xbox 360 controller
Kinect V/s Move - Kinect requires a 6 ft distance & sometimes playing multiplayer is a pain , move is really fun & guiding through the menus with Kinect will take time to get used to , Move is really fun to pick up & just play
Playing other Games - This mostly is not much a worry coz all the other games handle well
In term of features & overall user friendliness i would much prefer the PS3
& yes if you just want to game for fun & you are not a serious gamer then only buy WII