Ok, now that I got my vise I sat down in front of it and realized that I know virtually nothing about fly tying hooks. I did a little research on the net and found a comparison chart that takes a little of the confusion out of it for me. I printed it out for a reference. Anyway, the chart is located at http://www.killroys.com/hooks/hookchrt.htm in case anyone wants to check it out. Also, there are links there to charts from specific manufacturers.