I have Haze V3 for about a year and I am happy with it. What I love most is wide range of setup. There are 2 stems glass/steel; 3 kind of screen convection, conduction, can + liquid/hash container; 2 chambers with different length of vapor path; 4 heating levels. 10 years warranty. Vape performance is super. I purchased set including solid case, where you can carry device, majority of accessories, grinder and some weed of course. It was a huge change from my old Iolite with one heating level and plastic stem.
I would say that Haze is best option when you meet wit friends and you stay in the house. For outdoor activity or culture events I would rather go for Pax, which is smaller and looks more descret or brand new DaVINCI IQ looks classy.
I would love to own the firefly2 it uses convection heating.
https://www.namastevaporizers.com/blogs/news/pax3-vs-firefly2-who-wins
Firefly2 takes a bit of practice, the flavors are beautiful though. (it is the i phone of vaporizers)
I much prefer the pax3 myself, it has a open oven which puts out nice milky clouds but smells like fuck when used in public....
The link you put up for namastevaporizers, i ordered of them before and there after service was absolutely atrocious, There is much better and trusted vendors out there.