I own only a PS3(Till now).
I do not plan on buying any other console since my PS3 has everything I wish for -- Awesome Games, free online and loads of other things that XBOX nor the Wii has.
Moreover, Ps3 is not hackable(Scratch that, PS3 JailBreak has released).
Well, I do plan on buying some other console but that won't be until Microsoft launches XBOX 720
@ General Gaming :
Well, I am not sure but I do think that if ps4 or anything like that is released, Microsoft will release XBOX 720.....
So, I think that there will be a 720....