The Chuck looks a little less polished then what I'd like...though I know the
reviews are great and being able to switch from 3.7 to 6 is nice.
However, the BB appears significantly smaller than the Chuck. Probably closer to the Little Chuck, also, only 3.7v from my understanding.
I just find things like The Chuck, Silver Bullet, Screw Driver, etc...too big for my liking.