Thanks for taking the time to reply, I understand they are all rotary, however only the Atlas seems to have the ability to adjust the jaws height so the hook shank is inline with the center of rotation.
From my research the other two did not seem to be able to do that, therefore, while some hook sizes will work well, others will be off center unless I'm missing something...
On this video, the reviewer shows this issue against a ruler (min 8:20)
If what you are saying is that can be adjusted on the other two vises, then that would be great!
Thanks