Other than talking a big game, "Micro Pro® is the best performing paint roller in North America." I mean, I've never heard of them?? Micro-fiber is micro-fiber is micro-fiber!! If you know how to paint, and have used these types of covers, then you will probably notice very little difference to the ones you are currently using. If you have never used them, I love them for all products eggshell and above. Any less sheen then eggshell and they lose the ability to release the paint after some time of use, almost filling the roller to hardness.