After a year of using the Arizona E-Z Fletch I'm in the market for a new one.
Those who have posted saying that you can fletch an arrow in 2-3 minutes are right, it's a very quick and easy to use tool.
However, I dislike the amount of helical (or lack thereof) that you get with it. I've twisted it and turned it as much as possible but I can never manage to get a decent amount of helical with any brand of vane.

This is the most helical I can get with this tool.
You have to use such little amount of glue with it (so that it doesn't seep into the joints) that you sometimes don't get a good adhesion and the vanes fall off in flight.
Your money would be better spent on a different brand of fletching tool.