So I bought a Provari and I wasn't sure what tank to buy. So as with this hobby you seem to buy everything I bought a tank from IBTanked and I absolutely love how it vapes. So then I bought a Nautilus BVC and I hate it. I read so many great reviews about the Nautilus and how they are the sheet, but I can't for the life of me see why. The convenience of just switching the juice and changing the atomizer is much easier than the carto tank. I like the warm vape of the carto and the nautilus is a cool vape. Plus everyone says that carto's are the old way of vaping. I'm new to all of this, only a few months. Any opinion about these two tanks?