Elemental, i was enhance from 22-64 and it was really easy to solo as enhance and taking on many mobs was cake, but i just respeced to elemental and my dps has gone up by 100 average, if you are well geared elemental you should out dps an equally geared enhance shaman easily... i'm not saying that in a duel the enhance won't pwn your ass but in a raid and for PvE dps purposes elemental is the way to go.

Aeginne 64 shaman Blades Edge

No offense but if you jumped up a crapload of dps just by respeccing then it sounds like you were previously wearing Elemental gear and tryin to run enhancement spec.  There's plenty of DPS to be had out of Enhancement spec you just have to stack the right stats.