Wooh, tangent.
Anyway, I'm not sure if you sold your PS2 or whatnot, but I can honestly say, from my experience, I wouldn't sell mine for a GameCube. Of course, I'm not saying one is better than the other, as I certainly wouldn't sell my GCN for a PS2, but with my taste in games, the PS2 offers plenty which I cannot find on a GCN. And the reverse is also true.
I'd certainly recommend picking up both consoles, however, as one of the only relevant responses had said, it depends entirely upon your tastes.