I like my halfling warrior. I picked Rallos Zek so that I could pick up a set of human imbued armor. Mmm mmm good.
http://wiki.project1999.com/Imbued_F...8Rallos_Zek%29
Sneak is amazing. On a successful sneak check, so that you are moving slow, you can single pull a target as long as everyone else has their back to you when you make the shot. It requires some practice with positioning but it literally can't fail when you make the shot and you have the correct placement.
I have a lot of fun with the character, but I think that's the big thing. You gotta go with what you will have fun with. As a side note, the -5% experience bonus for the halfling isn't that huge of a deal since it modifies the base chart of the class, and warriors have the lowest chart in the game. Using that logic, Iksar and Trolls with their penalty pick up a sweet, sweet deal on that regen considering how much you actually are paying against the base adjusted cost.