NoS is my favorite, but I expect other people to enjoy RedBull more (blue bull is best bull, followed by the red cranberry then original). Regular blue can of NoS is my normal go-to, but if I see Grape I will pick up a can or two. Cherry tastes a little too strong for a can that big, imo, and someone mentioned an orange citrus can earlier in the thread...it's "meh". They had a black can with white and yellow trim that was somewhat citrus and that was much better than the orange can currently out. I feel like there's a mango flavor out there somewhere too, and I know I've seen a green can at some point in my travels. I don't remember what it was (apple?).
Sometimes I'm in the mood for a regular green Monster, and the red Assault isn't bad either. Actually, the Juice Monsters are pretty good (Orange>Pink>Yellow).
Monster also had something out for a while called Hydro, which was a non-carbonated beverage in a clear plastic container shaped/sized exactly like their 16oz cans. There was yellow, orange, and pink and they had a florescent color that really stood out. They kinda tasted like powdered Gatorade, but I liked them a lot and they had as much kick as a soda-like Monster. I haven't seen these sized cans anywhere anymore, but they do sell larger clear plastic 24oz(?) containers of the Orange and some Blue. It's a bit too much for one sitting, so I tend not to buy them.
I won't drink the zero/low calorie drinks though. If I'm going to kill myself, I'm doing it the right way.