I've tried just about every brand and flavor of gel over the years. I've had a few that have rotated through as favorites, but the one that has stuck around as a favorite and come to make up almost all of my calories consumed during running is Clif Shot Gel. They are the only ones that I don't get really sick of if I use them day in and day out. If you haven't tried Clif Gels in awhile I highly recommend it. Last fall they switched to a new recipe, switching from Brown Rice Syrup to a Maltodextrin/Cane Sugar combo. In my opinion the new Clif Gels are the best gels on the market if you want something that you can eat dozens of and not get really burnt out on them. A few of the flavors are not as good as others, but I have 3 flavors (Citrus, Vanilla, and Strawberry) that I probably consume an average of 10 a week and have not gotten sick of at all.