I will say the 19 is finickier to wick vs the Prime or the Mni V3 or any other Kayfun for that matter. I'm not certain why. I don't know why the juice flow control would make a difference and the decks are all the same/similar. But for whatever reason the wicking sweet spot is smaller on the 19 versus others. And yes, if you're vaping NETs you're gonna need to ungunk frequently so removing the tank from the base to refill is not extra work for you. You can get a longmode kit for the 19 that roughly doubles your juice capacity. I know some NETs can trash a coil within 2mls. Some 6 - 8mls. Depending on yours, that longmode kit could be a worthy investment.