It sounds like Wii will be a good option for you if you already have a PS3. You already have a 360 like experience, so mix it up a bit and add some variety. Variety is the spice of life.
The 360 can offer you probably the best online experience, but as mentioned you have to pay and you can get an online experience which is pretty good on the PS3 and it's free. And if you have a PC then you can already get most of the games you want on that or on PS3.
So the Wii seems like a good option for you.







