I went through two versions of the cheap ones in my daily driver. They are great off the bat, but they loosen up pretty quickly and get sloppy. The bearing inside, assembly hardware, and machining tolerance on the pivot assembly are inferior.
I originally scoffed at spending $300 on a B&M with these $50 options available, but I ended up buying a used B&M. It certainly feels more solid and I'll expect it to last forever.
I dont have a comparison for the schnell though, I went right from the cheapie to a B&M.
Last edited by winter.k; 03-18-2014 at 07:50 AM.
Reason: I bought a B&M, not schnell.
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