M Wood,
I do all my fly tying on a Dyna King Trekker. Wouldn’t trade it for the world. The customer service is awesome. Vises are a personal thing and opinions are all over on the topic. For the money, the Trekker is a great vise. Check out Fly Art or any of my previous tutorials here; all were done on a Trekker. I have both sets of jaws (standard and midge) and tie huge saltwater flies as well as small midges and anything in between.
I really want a new sexier vise, one with a bigger presence. However, I keep coming back to my faithful workhorse Trekker. Haven’t really found the spark to trade up despite the urge.