(rating for the non-diet version)
Rubyy Energy Drink and I get along pretty well, for obvious reasons. For one, it wears a lot of black, as do I. For another, it has a strange extra consonant at the end of its name, as do I. The main reason, though, is that it's distinctly different from your average energy drink. It tastes like the oranges, blood oranges and tangerines that it has listed, in concentrate form, on its ingredient list. Which is not your average energy drink and which makes it taste about five steps removed from a regular soft drink. And the carbonation gives it a unique feel. The whole package was pretty easy to drink...and drink quickly, because it was tasty and hard to sip. I can imagine this is probably used as a mixer in bars with good reason: partly because of the taste, but the bottle looks posh as hell, so that's attractive to those bar-people.
I think part of the reason it's so unique is that it, well, tastes like it's actually good for you. Granted, the drink is only 8% juice, so don't plan for it to provide your RDA of everything. You do get 100% of Niacin, B6, B12 and Biotin (B complex). According to Energy Fiend, it sports 80mg of caffeine. More than a soft drink but decent for most people. The regular version is sweetened with high fructose corn syrup and inositol. And I will say this as well: I normally can taste inositol--though it's not as repulsive as sucralose--but in this, it didn't give me pause at all. So bravo.
Special thanks to JasterIsFett, who sent me the drinks to review. Give him love.