Gels are the dog’s bollox for racing and long all day training rides; great for stuffing up the leg of your lycra for quick access (dark side, predominantly)
For any other scenario, I prefer cake of the fruity variety.
Warning, most gels require a ‘healthy’ intake of water (not with energy drink in it) – I used to race with water in one bottle, power drink in the other and that combo works very well.
Also, I’d side-step the ones containing aspartame, granted some research states that it’s harmless yet others claim otherwise. For me, every time I drink artificially (esp. aspartame) sweetened drinks I start coughing and my heart arrhythmia intensifies.
😉
EDIT: Jelly Babies are awesome, but a nightmare when wet…sticky mess in your speed-suit 😯