Leadfoot,
I had my garage done by Professionals twice with all the etching and so forth and the first job lasted about 2 years before the paint was a mess. Of course the next ones that did it told me the first people didn't do it right. They must have did it correctly as theirs lasted nearly 4 years before it started cracking and coming up. I now have my garage covered with the race deck snap together tiles and wish I had know about them long before I did. I have replaced one tile wheer I got a gouge in it from a jack stand with sharp edges. The gouge wasn't even that much and no one but me even noticed it but I have a few spare tiles and it was easy to change. Other people have had much better luck with the epoxy than I have and you should talk to them. The tiles cost almost half what the first epoxy job did and the second one was even more than the first one.
Ron