I really don't know. I started on a Herter's vise, moved to a Regal about 15 years ago and to a Renzetti Traveler about 10 years ago. Every time I look at another vise and try to determine what it will offer me that my current vise doesn't, I come up short. The Renzetti holds hooks fine, rotates as much as I need it to, and is pretty stable. I've been tempted to buy a new vise several times in the last couple of years, but until I can figure how it will help me tie better, I just can't justify it.

Guess I'm just a bit of a luddite...
Ted