Oops you said the best ... Luciano's 6s controller.
I'll second that one. I've beaten the freakin' crap outta the 10S and it's still going strong. I got a 6S for a back-up, but i think it's gonna be sitting on the shelf as the 10S has been a rock. it's probably the best power system i've used, and i've tried alot of escs. besides that, i like the way it looks. it's got a mean quality about itself.