I think you have to look at service conditions first. What's it got to deal with?
I would think that if you properly prepared the surface, and correctly applied an appropriate Urethane System, you'll be good for the next 20 years.
Some Epoxies may work fairly decent, but I am taking abrasion into consideration, which may have been a major participant in your current situation. Other factors apply as well.
I like Robert-NJ's "Redneck PHD" line! I wish I would have thought of that
It's probably patented by now
