I had a Primos blind and returned it. I think it was the GroundMax Escape. Here's what I walked away with and I think it is transferable to most Primos blinds...
The Good
The cam lock system for setting up and taking down was well built, easy to use, durable, and worked perfectly. I wish tents set up this easy. By far one of the best systems out there.
The fabric is extremely durable and will likely hold up to any punishment you throw at it.
Wide variety of window options make adjusting for shooting lanes a breeze. I really liked the layout of the window openings on this blind compared to some other models. Also the windows roll up out of the way and lock in with a wedge and loop style holder. Quiet and convenient.
Brush Holders. Work well for brushing in and concealing the blind. I wish they would have added some around the base of the blind but with holders just below and above the windows as well as the roof you can get creative and mask it pretty well.
The Bad
The fabric though durable is noisy. Any contact with the walls while in close proximity to game is a deal breaker.
The zippered door is a little weak but the way the blind stands there is no reason to really mess with it. Personally I wouldn't use the zipper, there's no real need to. The blind closes up just fine without closing the zipper. If you do feel the need to zip yourself in, only do it if the blind is set up on a flat surface. It's really easy to over stress the zipper on uneven ground.
Velcro window screens. This is the mesh screen (think screen door) not the window closure flap. The screens are noisy but if you know your shooting lanes in advance there's no reason to mess with the screens. Personally, I would just remove the screens all together and just stick with the closure flaps. Problem solved.
The Ugly
The deal breaker for me after all of this was the seams. When the seams were stitched they apparently used a battering ram to poke the thread through. Every seam stitch had a large enough hole to show daylight through. Every single one. Have you ever seen those night lights for kids that project stars onto the ceiling? Well that's what you would get if you hung an overhead light above this blind. It was too much for me, I just couldn't bring myself to trow a gallon of seam sealer at one of the most expensive blinds on the market.
Bottom line. Good concealment blind. Don't use in the wind or rain because it's noisy and it will leak (a lot).