Since OP specifically asked for some hate, let me say shamans might be the most tedious class in the game. Here, try the simulator
https://www.cs.mun.ca/~dchurchill/eq/shaman/
Are we having fun yet?
But as for best all around class, they are definitely versatile, but I'd say ench, necro, bard, and even druid are up there as well. If you want a buff bot, however, look no further. Shaman is #1.