Hello folks Been using Blu for about a year and sister uses V2 for its stronger flavor. Though I have been somewhat dis-satisfied with Blu for its weak smoke and ok flavor (V2 is better on both counts. Recently I bought cartridges that are 'compatible' with Blu and V2 - made by a company called The Magic Mist (lousy name but good price, quality). Their website is The Magic Mist compatible with Blu V2 theSafeCig and GreenSmoke. Better smoke production than Blu - by far. Flavor is smoother too. Tried the V2 compatible ones on my sister's ecig too. She likes them. Any longer term users out there?