I own an Innokin VTR as my primary vaping device.For that reason all the tanks I own (Protank 3,Davide,IBtanked etc.) are 19mm in diameter.I want to buy an e-pipe but be able to use my existing tanks with it.Which one would you propose at 200 dollars max price?I already use 18650 batteries so would be handy if the e-pipe uses the same.