I've got the Smok G-Priv, it comes with the Smok big baby beast, TFV8, 25 mm, very good tank. I've put RBA decks in the tanks I have, original tanks had leaking issues because of atomizers wires causing leaks fixed by moving the wire. I have had no issues with the vaporizer, think the navigation with the touch screen is great and makes it so easy to use.
I did run into 2 people that say they had a problem with the device reading resistance and couldn't use the device. Prices have dropped on the G-Priv, since I like the touch I was hoping it would catch on but I don't think it did.
Watched a review of the Battlestar, I don't care for it but that's my taste.