So far, I have used the C30 gels at The Big Alta (50k on Sat, 28k on Sun). Here's why that experience made me buy some more: - The taste was great (subjective, I know, but a critical first step in fueling). - The consistency worked well without water. I ran low on water both days (stupid mistake) and the gels went down easily without the normal mouthful of water required by many gels. For really long runs, this is very important to me. - The content is solid. 30g of carbs and 200mg of sodium is a great combo in a gel. Very glad I came across these gels and definitely recommend.