Have you looked into the ZMAX? I've heard some good things about that one, and the price seems to be similar to the Vamo. Also, I second the SVD, not because I've used it, but because I like Innokin in general. They make some nice quality items at fair pricing. My MVP 2s were great! That's also another one to consider. The MVP 2, although it does not have removable batteries and is a box shape. Mine are still going strong 6 months in, with no sign of the batteries loosing life at all. They also provide a great base to build coils, check the ohms, and dry burn all at once. They also have the Coolfire I if you vape at around 8.5 watts. They used to only take 18350 batteries, but Innokin recently added an extension tube for them. For any Innokin product, I recommend you save some cash and skip the starter kit though. I hear their chargers and batteries live a little to be desired for.