When i bought my Warrior it had a twist throttle on it. I thought it was pretty cool until i rode with it through the trails. Every time it dipped sideways and you had to hold on a bit, i'd end up twisting the throttle and going faster. It ended up with me over the bars and the quad on it's side. I got used to it after a while, but my hand started cramping from having to grip lightly to avoid too much unwanted throttle.
I'm sure for dunes and track racing and stuff it would be nicer, but in the trails around here it wasn't very much fun. I swapped it out and sent it to another member, so we'll see how they like it heh.