@Steve Im pretty much of a pen connoisseur as well.
I have bought all of Randys pens and some others.
So in my personal view i love my V1, why? Because it has a clicking action that i like.
The V2-V3 practically, you push and its goes so you need to be more of an intermediate user if your trying to go slow.
The new auto Gausen pen, is were i keep my Reta, its pretty bad ass, but i dont think i would swap pen vials or have 10 auto pens either.
Randy just got a new Gausen pen not automatic im going to test out.