I have a rotary Dyna-King vise here that I hardly ever use. I tie mostly trout flies, nymphs and drys, up to about #12 and down to as small as #24 and for that I prefer my Regal Vise with midge jaws. Now for the few times a year I tie a few streamers for trout or smallmouth I will use the Dyna-KIng not for its rotary option but just for the larger jaws.
Unless you Palmer/Wrap lots of materials on lots of large flies, size 10 to 4/0, I don/t see a need for a rotary. A friend of mine ties many Musky flies, he make his living tying these flies and guiding musky anglers and for his patterns he wraps lots of fur and feathers and he needs that feature. What little Musky fishing I do it is not worth purchasing the materials to tie with so I just buy those flies.
As others have said, you will get more vise for the money without the rotary feature and I would suggest the Regal.
