I've never tried any of them, but I know my son drank a lot of RedBull when he was in the Navy.
There has been quite a bit about them on the news here lately. They have caused some serious health problems, even death.
Not that you are going to do it, but a couple of kids have died because of mixing RedBull or the 5hr stuff with alcohol. Because of the high caffeine amount, kids are mixing them with alcohol, and the caffeine masks the fact that the drinker is flat-out sloshed. They think they are fairly sober and continue to drink. They either get incredibly sick from alcohol poisoning or get into a car and drive.
They are also really bad for heart and blood pressure.
You might want to google the effects and hazards of caffeine energy drinks.
I have been a pop drinker all my adult life, drinking several per day. I switched to Diet Coke, at least 25 years ago, not long after it came out. I switched to caffeine free ( and gave up real tea, too

) , about 15 yrs ago, because of fibrocystic breast disease.
Since July, except for maybe 1 or 2 per WEEK - usually Sprite Zero - I quit pop entirely. I am, however, seriously addicted to "fizzy" water. Walmart has one that 98cents/2 liter. No calories, no caffeine, no sodium. Isn't doing a damn thing for my sleep patterns, but it's been great for my skin.

It does increase the pee frequency though, which I guess could be a problem at work, depending on your job.