I am wanting to play to Shamans again in 4.2, think about doing BGs mostly and maybe some arena.

However, I am on the fence about Elemental or Enhancement.

I think Enhancement would be fun, but I already have a melee base team (DKs).

The main advantage of staying Elemental is I can use the same gear for Ele / Resto. Otherwise I'd have to grind out to sets of gear.