Garage flooring - paint, self stick tile or interlocking tiles?

[ERA 778]

I used the two part epoxy from Lowe's. My garage floor was maybe 15 years old, which didn't help. I cleaned and etched it thoroughly, but still had places to come up in less than two years. There were two types of failures: one where the hot tires on a car "stuck" to the epoxy and pulled it up and another where it appeared to bubble up from below. I read somewhere that if there was no moisture barrier installed before the concrete was poured, you can count on moisture problems.

I reworked the damaged areas and repainted after three years, but it's happening again. Still, the floor looks much better than just bare concrete and it is easier to clean up spills.