Common tank problem really. A Vase driptip should prevent it from sliding up too far up till it unseals itself. all tanks no matter what type, ex or not ex or those Big daddy ....z have the same problem.
Oh and i believe the flange also prevents the tank from twisting. Didnt notice that earlier.
For flavours i cant comment much, everyone's taste is diff i guess.
Erm, no. Nothing happened to my Big Daddy tank. NONE of the sliding issues. Never ending turns, NO. Slide up or down, NO.
Maybe it's bcos of the SS caps, I dunno... But I can hold onto my SS BD sh!tz tank by the polycarbonate tube without drip tip, and without fear of it sliding down.
Here's pix for illustration.

P.S: Yes. There's 2x 18650s in the box. Which should pretty much convince you the sh!tz BD makes!!
And no, I'm not currying BD tanks.
