Epoxy finishes are a pain in the butt to work with, and... expensive. I gave up on it after watching too many beautiful bows yellow out over time. The auto clear coat stays clear, and is every bit as durable....
Granted... there are some damn expensive auto clear coats out there too, and some are a nightmare to work with in anything less than a climatized spray booth, and experience using the stuff. The stuff i've been using for several years now is excellent to work with, and cost effective too.