At the moment, I use a Record 53 and 1/2 (Or is it 52 1/2?) with a metal dog in the top. It's okay, but not pretty, so I'm going to use my old Paramo 10" again. It's been clamped to the rafters long enough!
I bought two 'York' Vice screws, as I thought about using a leg vice. I intended to use the two screws, connected by a cycle-chain and sprockets, to avoid having to bend down to adjust the sliding board at the bottom.
I fancied something like a Veritas twin screw vice, on-end, and the following is one solution.
http://www.popularwoodworking.com/woodw ... e-leg-vise
But the cycle-chain idea was my fave. Trouble is, my engineering skills aren't good enough to fix the sprockets to the vice-screws, so another idea bit the dust. Then I discovered that LN invented a similar idea.
http://www.finewoodworking.com/ToolGuid ... x?id=33615
EDIT: Found the link for the leg-vice
http://www.lie-nielsen.com/catalog.php?sku=wb-r
Oh well. the Paramo has always been good to me, and there's nowt wrong with it!