Did you even look at the ZNA? It's not for me, I'm happy with my ProVari, but the ZNA does fit all of the criteria you were listing. The ProtoVapor is the only other VW mod I've seen that seems to approach the ProVari/Semovar for reliability, built like a tank, etc.
Edit: but you do have to keep that e-juice off of the OLED screen. If you can't do that ('cause it will fry the screen), you might as well keep looking.
I looked at the ZNA. The box/tube hybrid is intriguing, but a bit too bulky. Once we enter this sort of pricepoint, I start being more picky. If it were half the price, and could be had for less pursuit... I might settle with it. I'm thinking the wiz evolved might be what fits the ticket for me.