many thanks for all your answers ! I'm still in the process of levelling my toons at the moment (only 31), but really enjoy it so far and I've only started to get the skills (rotation is still pretty basic to be honest :-)

Instances are no big deal at the moment, although I've encountered some AOE bosses which can be nasty. I believe at high level I will need to improve my moves as I feel I'm still to static at the moment, pretty much applying a "tank & spank" posture.

Thanks for the tips anyway, much appreciated