Cowgirl, a little sugar I don't mind. It's the excess they put in that makes me shake my head.
My 12 y/o gelding is like an ADD, hyperactive kid if he gets too much sugar. I'd just as soon make sure his food has as little as possible.
I don't buy sweet feed. I try to stick with the mixture I described as much as possible.
I'd love to be able to custom blend my feed but for now I buy Blue Seal, which already has those ingredients. Blue Seal is one of the better premixed feeds out there.