I've been using MyProtein's MP Max Energel Isotonics, mainly because they seemed cheap at about 80p each. They taste ok, work fine and need no water. I've got used to not using them though unless I go over 3 hours, though they did give an energy and pace boost when used more often (plan is to train with them used sparingly and race with)..
Edited: 06/08/2012 at 23:20