Mine used to be NOS but after drinking a lot of both that and Red Bull I have to say I prefer the old classic. It’s got more depth or something. Rockstar is decent, but seems like a worse imitation of Red Bull. But it’s also cheaper. Amp is like an off-flavor Mountain Dew. All things considered I’d rank it last among what I’ve tried.
What about the health effects? Negative? Positive? Similar sugar/artificial sweetener issues as other soft drinks. Caffeine is not exactly good for you either and can lead to dependence and withdrawal. I swear I have had heart palpitations while drinking some of these things. I try to space out my caffeine intake with a few days between, plus that makes it a lot more effective when I need to stay up. I also don’t drink it in the evening if I need to get to sleep relatively on time. Do you think the vitamins and other random unpronounceable ingredients could actually be worth some benefit?