Guitar Hero 3 Dilemma

alright, this is my situation,

i have guitar hero 1&2 on ps2 but i only have 1 guitar on it,

i also have a wii,

i dont know which console to get guitar gero 3 for,

i already bought a ps2 version but i didnt open it yet so i can still return it.

the main reason why i want to get it for the ps2 is so i can get 2 guitars, but i dont know if thats worth it compared to what the wii can do.

Now the reason why i want to get it for the wii is for online play, and for downloading songs online.

So guys, i need your help,

areall the cool wii features worth returning my guitar hero 3 for the ps2,

or should i just keep it for the ps2

thankss

other then some band/crowd effects(graphics)

they are pretty much the same game, the guitars IMO are better for the next gen consoles, but its not that big a deal, theyre all wireless :D i say keep it for the ps2, its pretty much the same game, cant the ps2 go online with gh3?

and i dont think the wii community will be very large on the wii