2 shamans any good?

I just started multiboxing and got 2 shamans to 27. When I started to read the forums and wiki and stuff all I could find were good 3,4, and 5 combos. I'm not realy sure if I should just keep leveling my shamans for a 2 combo or make a hunter/priest or something like that.

I've gotten my dual shammy team to 40 now and im loving it so far. I have only wiped once and that was me @ 39 pulling level 43 mobs and I chain pulled 2 too many lol.