humm... ye, you just cant swoop in and hope to make a good build xD
they say doctor class is the best solo char overall on high lvls since he gets all those healing skills and when hes maxxed those he can concentrate on combat skills (but veeery weak on lower lvls, but still needed quite alot in groups for fighting bosses)
i never did play doc... but this makes me want to take up the game again and make one
easyest to play is martial artist btw (isnt so dependant on equipment as other classes are... as he gets damage from stats and skill not weapons, tough they did nerf down the MA skills at some point, guess they figured it was too easy)