I dunno, I liked the site because it looks like they actually spent some time with each vape. Maybe they didn't, sorry. Definitely seems more legitimate than some of the sites out there like vaporizer.org.
I would definitely go with the Extreme Q. I've had some experience with both, and the Extreme Q seemed to conserve weed just as well as the HA. The build quality definitely seemed better on the Q as well.
I bought one after reading this review...
Unless there's a meaningful difference in it's ability to hold a temperature, I would just go with the digital. If you're paying $500+ for a vape, might as well get the best of the best.
I've only owned a Magic Flight, so I can't speak for the other models. I think the magic flight is a good match for most of your requirements, however it doesn't have any temperature selection.
EDIT:
This review seems to suggest the NO2 is your best bet for a portable vape...
I really started hitting the gym last year, and definitely saw a huge difference when I was only vaping vs smoking. It really sold me on the idea of vaping all the time and giving up smoking (with a few small exceptions :).
I have a volcano, extreme q, and vaporbros, and I can tell you that the extreme q gets more use than the others by quite a bit.
It's not the best bag vape, but in my opinion, bags are inferior to whip anyday. Plus a lot less maintenance.