They are probably not as powerful as rangers, but rogues/shadowblades are very fun to play. As many movement items as possible, and grab a nice axe in the off-hand - this lad/ladette can deal some sweet damage.
Think I had the most fun out of the all builds I've played with. Actually had that type of rogue along with 1-hand/shield character (both lone wolves) in my latest game, and couldn't wait to open Hall of Darkness so I could respec very unfun (to me at least) shield character into another dagger/axe weilding rogue/warrior hybrid.
I'm currently at the end of level 15, with around 15 in strength and dexterity, 8 or 9 in intelligence and 10+ in speed. Of course, with items.
Lacerate, Precise Incision, Daggers Drawn - those are amazing, and I don't think I'll even go for the master skills. DD while in backstab cone -- ayay!
Works nicely.