Hm. While I favour Suki/Sokka (because Suki is pretty damn awesome, and Toph is more likely to make a positive appearance in a Suki/Sokka fic than Suki is to in a Toph/Sokka fic, among other things), I'm fine with either.

Or maybe a love triangle. Hm. Triad? Toph did kiss Suki, after all!