There are four flavors of Muscletech's Nano Vaper (Blue Raspberry, Orange, Punch, and Grape), in two different sizes, 2 pounds, and 3 pounds.
For us, BSN's No-Explode (with six flavors, and two sizes) are still the leaders in this catagory, but Muscletech's Nano Vaper has started to come on strong.
There are people who are loyal and swear by BSN's products, and there are other's which love Muscletech's products.
They both work, and tons of the people who takes these say that NO products are the best out there for them, besides basic protein.