So I got my tank carts and atty from house of vapor. Fist off, how do you know the difference between version 1 tank atty vs. version 2 tank atty? Anyway, this thing is the Pinnacle of the vaping experience as far as I am concerned. I have been vaping for exactly one month and would read countless forms everyday. After using the tank system, there isn't much more for me to accomplish besides jumping into DIY juices. Can't wait for that.
Anyway, my initial impressions are: the 1st tank will go by super fast as the atty literlly EATS the juice. It appears, based on the videos showing the inner design that it takes a bit of juice to keep it wet regarding the initial flow. After that, everything goes very smoothly. The taste is very pronounced and the throat hit is strong, and vapor clouds massive 

 . I started with a 510 and before a week was up of using that I had an ego. I never switched from the standard atty and cart setup. I just did the blue foam mod and it worked well. I personally won't get any mod or anything like that. With a 1k mah battery there really isnt a need in my opinion. 
I truly believe I have reached the Pinnacle of the PV experience. Other than releasing a higher capacity cart like 2.5ml or something I really don't see how this can be made any better. 
It does exactly what it is advertised to do.