You know, I intended to wait until I had experience with all the races to make a decision, but... you know what, the Drakk have never steered me wrong.
Except for that one time where they declared war on me for no good reason, setting off a chain of events that would cause the entire system to descend into anarchy until I made an ally and made them clean things up.
Also, they have the best Helm. Which means more speed! More wonderful wonderful speed.