I have a couple Kurt knockoffs, one if them was decent quality, the other one required a few hours of work on the mill to make it right and it's still the crappiest vise I own. I bought a 4" Glacern vise about a year ago and I think it's fantastic quality and a decent price. None of the knockoffs even have square solid jaws, I have to get close when indicating and ignore the bumps and divots. This is a video showing the glacern vice and indicator.
Shawn, proud to be a member of MetalworkingFun Forum since Nov 2013.