I got a V2 in the mail yesterday. Slapped 2 pre-built coils in it (didn't do a great job of it), wicked it and have been vaping away ever since. The flavor is really good. Personally, I taste a big difference between the 2 and 6ml tank. 2 is much better, imo. But, yeah . . . .it's a guzzler so 2ml is more like a cumbersome dripper with a really deep well than a tank. Definitely getting a little seepage out of the base - not terrible but it's definitely there. Initial impression - my favorite aspect other than the flavor is the airflow control. Closed by one click, I get a notable ramp up in flavor and an ever-so-slightly restricted draw. I like it better than wide-open so far. With 2 clicks closed it makes me wonder if MTL might be a possibility with the right build in place. For the price, especially, I dig it.
edit - I tried MTL with a 510 drip-tip and single coil build . .nah. Too airy.