SiS (Science in Sport), only positive feedback from my side. No stomach ache or other digestive issues. I've tried all sorts of tastes including lemon, apple, orange, blackcurrant. Double espresso gives that extra push before the finish or end of the ride.
Merida Scultura 5000 (2015)
Merida Big Nine 400 (2019)
I take POWERBAR Power Gel smoothies. They have nice flavours and taste. Mango and apple, banana, bluebery. But I dont do serious training bike rides. Just longer recreational rides in strong winds. After more than 50km having a power gel like this feels nice.
I’ve always used cliff bars or fruit if it’s a long ride, but I don’t know never been a big fan of gels and stuff as I always feel better if I eat a good meal/real food before and the energy seems to last longer
If you drink sports drinks such as Gatorade, the carb support there can help immensely.
But any sugary soda will also do. Such as Tahitian Treat.
So long as you're active, you're using the carbs so the insulin spike doesn't matter.
I find that I have to use full electrolyte replenishment, such as Liquid IV or Hydramate to get the replenishment I need.
In the past (some 10+ years) I used to use Cliff shots and GU. But for the past few years, I avoid all energy gels. Plain and simple water..:-) If I can get some natural sugar such as maple syrup, honey or panel (brown sugar), I consume those along with some nuts such as peanuts or other dry nuts..
Carbs Fuel, the Original gel. 50 grams of carbs and it's only $2.00. Unflavored, just sweet and thin consistency. Really nice.