New to vaping. Just upgraded to an innokin MVP v2 from a ego twist with a cartotank. So far I love it. It came with the iclear30. I want to start buying extra tanks but don't know where to begin. I love the rotating tip on the I clear and the fact that everything screws together, that's the only problem I had with the cartotank. Wanting to get a very high quality tank( something that will last and produces best flavor and vapor) that can have the rotating tip that screws on and locking bottom. Any suggestions would be greatly appreciated. Thanks in advanced.