Quick shipping, a huge variety of flavors, free samples once you go above $15, and customizable juices are all very strong selling points. It would be easy to rack up quite a collection from MBV, especially since their prices are very competitive. The shipping is as fast as any I've seen, and their efforts to compile a list of tank cracking juices are appreciated. That said, the list isn't complete and a LOT of their juices seem to be rumored to crack tanks. I've also read a lot of people strongly recommending extra flavor shots, but I haven't needed any extra flavor in the juices I've tried, they've all been quite flavorful from the start.