Here is a full review of many different vises, just follow the links for your price range at the bottom:
http://www.flyfishohio.com/Vise%20Review%201/Fly_Tying_Vise_Shoot-Out.htm
The funny thing about vises, is that everyone has their own preference. I work in a shop and have tied on a lot of different vises, even one that costs $800. My pick is still just the Regal Medallion. My best friend swears by Renzetti's. Another friend will only use his Dyna King. Go to a fly shop, and tie on a couple vises. Find out what you like.