I used the Tepui Kukenam 3p lat summer. For me, going to a roof top tent from a normal tent was such a game changer. They're fun, but more importantly they provide a better nights sleep which means more energy for fun stuff during the day. The debate between a soft tent like the Kukenam vs. a hard tent like this Hybox will have a lot to do with your personal preference and lifestyle. For me, all of my camping trips are for mountain biking and I almost always need to drive from campsite to trailhead every day. So ease of deployment/packing was the priority that motivated the switch to the Hybox.
I just got it and have not used it yet, but playing with it in my driveway I can confirm that my dreams of quick set up and take down are looking realistic. It's super fast and easy with this thing. The biggest sacrifice, in exchange, is going to be head room. The fold out style tent is super tall and a short person could even stand up in there. At 6' tall I can barely sit up in this Hybox. That said, I never spent any significant time sitting or standing up in my last tent so I do not think this will be problematic for me.
As for the cost/value, I was very happy with the investment last summer in the Kukenam and anticipate being just as happy with this one (will come back to comment further if that changes). These things seems astronomically expensive compared to tents, but also dirt cheap compared to campers... at the end of the day it's just a matter of what's important to you and what you have the budget for. For me, a roof top tent combined with an awning (also from Tepui) and a good table/stove/cooler setup provides pretty much all the luxuries of a small trailer/camper, but at a fraction of the cost and with more flexibility.
The one star I'm removing is because they use the same foam mattress as my Kukenam which is ok, but not great. In this day and age there is plenty of memory foam floating around, I have a hard time understanding why they can't source a slightly thicker and softer mattress. I sleep on it as it is anyway and still sleep great, but if you or your partner require a plush sleeping surface you'll want to add a layer of foam yourself. Not a huge deal, and once you do you'll have an incredibly luxurious nest, but a slight nuisance.