Nice Review!
I have one of the VS DNA20's and it is quite nice. Very well built and fully charges in less the 3-1/2 hours. I like the updated power button on the DNA30 version as well as the fact that the 30 does not have that occasional glitch the that DNA20 chip has were the resistance check will get stuck until you reboot the chip.
The thing is actually a touch smaller than a box of TicTacs but it really does the job. Kinda funny looking if you mount something like a KFL+ or a Russian 91% on it because the topper is about the size of the device itself. But it will indeed fire them!
Good Job as Usual!