So many good choices and opinions both in this forum and searching google . I use a Dyna King ( Ergonomic Supreme ) non rotary and really like it and don't see myself changing . However your question was specific to "good rotary " vises . I tied for years on a Renzetti 4000 and I thought it was a great product . It is very smooth , holds hooks well and has lot's of gadgets for the in line rotary tier , which I am not . I don't think you can go wrong with a Renzetti , Peak or Barracuda . Look at the clearance that you have between the arm of the vise and the back of hook. The space between the V in the shaft arm and the vice head can be restrictive to some . For example compare the Rezetti to the Griffin rotary and you will see there is some congestion in Griffin setup . Others may not have any issue with that Recommending a vise is like recommending a golf club , at the end of the day it's the operator and personal preference. Another point is how solid is the manufacturer if you encounter an issue . Renzetti is very good. Let us know what you decide on.