@clintflint - I usually don't use a scrub, but I will use a mask occasionally. It wasn't because of the way my skin reacts though. I quite like how it looks and feels after a good scrub. But I kept hearing terrible things about microbeads and they seem to be in almost every product at the moment.
Of course, if you make your own scrub I guess that isn't an issue, but I never feel like it's actually doing anything when I make one.