I did a lot of research when I bought my kit... From what I got a lot of the success of these comes from the prep. The more you penetrate the concrete to clean it of any oils the better the epoxy will hold. That said everyone that I talked to said stay away from the rust-oleum, behr and quikrete and I would agree. Two of my neighbors went that route and regret it big time. Both are pealing (have been since a few months after) and do not really have the durability that you would expect. They followed the direction and still had poor results.
Take a look at
www.originalcolorchips.com/. I bought mine from there and have been over satisfied with the results. They are a little more expensive but come with everything you need, from start to finish, that you will need (besides rollers). It even includes the acid etch to FULLY clean the floor and a clear top coat that seals everything and keeps the floor shiny. I have never had any problems even with my kickstand leaving a mark!
MAKE SURE YOU... 1.Acid wash the concrete, rinse it fully and let it dry 100% 2. Coat the floor evenly with the epoxy and let if fully dry in between coats/steps and 3. Do NOT drive on it for the full 7 days... your tires really heat up when driving, if you park on it after it will pull up 4 nice spots for ya and all your hard work is lost.
I have done two other garages (one for a friend and one for another guy in the neighborhood) and they have turned out amazing as well, it is a really good product.
They do monthly color specials for $199 plus shipping so look at the site, if the monthly color isnt too bad get that one and save some cash (I got the dark gray and it looks really good)
If you would like a hand let me know!