I have Xbox, PS3 and Wii.
I like the Wii for family entertainment. It's prolly the best for it. I like Xbox.. well because Microsoft was smart and got all the really awesome deals first.. and I like PS3 because it's much better than them all.
Yes I have tried them all. And PS3 never over heats and has untapped power. Plus.. I can access internet without paying for it! Though Xbox live does provide safer and faster connection when it comes to games.
But over all... if games that only came out for Xbox.. came out for PS3.. everyone would be playing a different tune.
It's because Halo and a numerous other games only signed with Microsoft.. and Sony got the shaft. But PS3 is a better product.