I tried out a bunch of um. Probably one of the reasons i didn't get to a very high level >_>.
I enjoyed the Spell-slinger class and the Engineer the best. My little engi was one of those little rat looking dudes, i just loved the animations for um'. They looked so derpy it was adorable And the Spell-slinger I think I played as one of Aurin guys. I wanna get it so bad but I just cant afford to spare the dosh atm x_X Plus I've been working so much lately I wouldn't have much spare time to play it...
And to be honest the questing I tried was very much the same as a lot of other MMO's. However saying that, this is the first MMO I've played where I read all the quest dialog and enjoyed reading it too. I'd bet the questing gets way more interesting when you get a bit higher level. A lot of people were saying that all of the classes start to really open up after level 10 (I think level 10 anyways) so perhaps the questing becomes more varied when you hit that level too.