Re: Rotary Vise Suggestions
One recommendation I would make is to try to find some local (to you) tyers that may own one or more of the brands you're focusing in on and ask if you could try the vises. Most of "us" are more than willing to let someone give their vise a go.
You can assemble a simple bag of tools/materials (hooks, a bobbin, scissors, tailing, body material, hackles and wing materials) in a ziploc sandwich bag or snap box to take with you so you have all you need to try a pattern or two.
Part of it is the functionality of a vise, but a BIG part of it is the comfort-ability. It may look nice and tie well, but you just might not be comfortable tying on it. One thing about rotaries is for them to work right, the axis of the shaft has to be a certain height above the tying surface and unless you can raise or lower the height of your tying surface (or your chair), this fixed height may cause you to hold your arms in an uncomfortable position.