I love Healthy Delites' muffins (you can buy them at Garden of Eden, among others) and I've tried a lot of the different flavors over the months.
So far, I've loved them all - except one. The carrot raisin oat bran is just nasty.
I'm surprised, because there's nothing intrinsically unappealing about those ingredients. I bought one once two weeks ago, and it tasted rotten. I thought I must've gotten a bad one, and threw it out. Tried a fresh one today - same deal.
From now on, I will stick to the tried-and-true flavors: lemon poppyseed, cranberry oat, banana bran, and blueberry oat. I recommend you do the same.