I was happy to finally find a nice little tilt-swival bench vise at Harbor Freight and on sale for 8 1/2 bucks. I never liked vacuum bases and that is what it has. My work bench surfaces are way too rough to hold a vacuum. The best I have is an old drafting table and even it has scratches in it that leak and won't hold very long. Its rickety too. Sometimes I wonder where I was when brains were being passed out. For some reason I set the vise on my granite comparison plate just to get it out of the way - bingo. Now it holds solid forever and the comparison plate is plenty heavy enough to keep things steady but light enough to move from bench to bench.
RL
RL