So far rogues seem to be the most annoying vs my shamans. It is partly due to the fact that all the items for elemental are cloth it seems like, since I'm only using quest rewards and not doing instances. I have no shield either, since I'm using a staff so these buggers pop out of nowhere and do lots of damage very quickly. It is nice though since they can't really stunlock or they get pwnd by the clones. Also, another big thing is i haven't set up lead switching macros and follow macros so when the lead gets sapped or killed it is very rough, and i pretty much rely on instants to take off whatever HP they have left (if it is low).