So which one do you like the most and why?
For me I liked Warlock the most.I love the demonology changes and Locks are able to use their pets like they should and summon the big guy demon(forgot his name xD)+ Hand of Gul'dan seems pretty tremendous.I love affl damage too though the almost zero healing recieved was a blasphemy,I mean even rogues will get more healing now.Destruction is the good'ol'well destro always loved it since tbc ^^
I dont have one which I think it sucks,but in my opinion compared to other classes shamans have the least of awesome abilities.