I've owned both a clutchmasters and a ACT. My vote goes to the ACT since the Other one broke and was pretty much shit. Now I do have a freind with a Clutchmasters and his is doing just fine. Of coarse I have another friend who also got rid of his clutchmaster cause it broke. As for the other brands I've never used them. I think you should get a ACT my opinion since mine is still running strong and my CLutchmaster is dead and gone...