Well today I felt like adding a little spice to normal life and grabbed the Lightspeed wrench out of the tool crib to give it a whirl. It had been sitting in there a while and I just recently realized it was a Lightspeed. Anyway, I go to adjust the f***-it nut on a S4 c-clamp, and the thing slips. I try another clamp, slips again. So forget it, it went back in the drawer. Later I was taking some S4's off of floor plates and decided to use one of those Crescent slider c-wrenches. Well, besides the fact that they are thicker and heavier than my usually 6" wrench, the darn things jam. I don't want a wrench I have to clean out! So that went back in the tool crib as well. So yea, my opinion remains unchanged on the slider wrenches, and as for the Lightspeed, I didn't want one anyway.