All the gels to me are nasty. I think it's the consistency which I've heard described as "horse snot". I figure they're only in my mouth less than 30 seconds so I don't even care that much about flavor. I DO like the caffeine ones, the more the better. If I'm to the point where I need gel, the caffeine helps.

I like the shot bloks, they are yummy. They don't work for me with running though because I also have a coordination problem I don't get quite the same effect from them either.

I use Cytomax in my water bottles. While I know I have stores in my body (and more than enough, no doubt), the combination of gel and Cytomax really helps with energy and recovery. In a sprint tri, perhaps it's not necessary but I did have a double caffeine gel before my ride and some cytomax in between my ride and run in the last tri I did. I finished feeling really good and was so energetic I wanted to go for a walk when we got home. (Of course it was just a ploy to go to the local pub for burgers and beer!)