Among others, I have a Tesla VV/VW - they also make mechs and a fairly new Spinner type.
The VV/VW is a nice, solid device. It is limited to 3 amps, and only uses 18650 size batteries. The amp limit is low compared to some (i.e. Vamo, SVD and others go to 5 amps max), but I've not had any issues with 1 - 3 Ω coils. Not good if you want to sub-Ω. And since it's not a sectional (like the Vamo and others) or telescopic (like the SVD and others), you won't have any options to make it shorter.
Machined from aircraft grade aluminum, it's relatively light, but very sturdy. Mine's had a few drops, and come through just fine. (Can't say the same for the Protank!

)
The (sort of) triangular cross shape I find to be very comfortable to hold. And like the SVD, the Tesla has the ability to lock the settings so they don't get accidentally changed. That's a feature I wish more had!
The only thing I'm not happy about with mine is the ego well. It should have been machined out a little bigger. A T3S won't go down (an extender takes care of that), an Evod will. But since I'm generally using a Kayfun, it's not a major issue for me. Can't say about your ET-S, as I don't have one to try.
And here's the cheapest domestic source that I've found:
https://www.usavapingsupplies.com/
Fast and ime reliable source.