Blew away my expectations.
Given how cheap these grow tents are, my expectations weren't exactly sky high. They should have been - I love these tents! (note: I've only had mine for a few days; will update if my view changes) (also note: you only get the tent, not the shelves or lights that I added).
There's tons of ports for vents on every side (each with two separate cinches for closing them), and three separate windows (velcro panels over them seal them off well; you can roll them up to leave them open). There's an interior storage bag, and outside velcro tabs to hold the door open if you want. The material is super-reflective and feels durable, and the fit and feel of the outside is very professional, and would blend into any home where black can fit into the colour scheme (do note, however, that the exterior can get dirty and show dirt - but is easy to clean with just a wet sponge or washcloth).
Opening the package, there's a lot of care - they wrap it almost like it's a present. When you first put the posts together, it'll fee somewhat flimsy (and I was expecting this). What I didn't expect is that when you put the fabric around it, it tensions it snugly and the structure becomes much sturdier. You could even store (relatively light) objects like cushions or blankets on top if you wanted; it's definitely not going to just collapse.
Getting the fabrick over is a bit tricky just because there's so much of it that you can get disoriented if working on your own. Just remember that the costway logo goes at the top front right, and work from there.
I didn't really "get" the removable interior tub at first - the instructions aren't clear, and it doesn't really seem to have any "form" to it, no nature to inherently stay square. And there were velcro tabs on the corners that didn't seem to do any purpose. Until I suddenly realized (a day after I first set it up) that the velcro tabs can be fed around the posts in the corners, wherein the whole bottom attaches snugly and forms a nice square basin.
The two crossbeams on the top give you a sturdy mount for hanging lights (or anything else, such as ducts and fans). Indeed, I just simply fed my light's mounting arms straight over the lower pole rather than bothering to bring their adjustable ropes into the picture, to get it as high up as possible. With a 200W VIVOSUN VS2000 light inside, one top vent open, and two side vents open on the same side (in the narrow channel between my two tents), temperature is usually 28-30,5°C, vs. a home temperature of 22-23°C, and humidity is generally hovering in the 50-60% range. Obviously, adding a duct fan or even just opening more vents would reduce both the temperature and humidity, while misting or keeping the bottom tub wet would increase humidity - and it'll obviously depend on your number of plants, type of plants, and how well watered they are. I'm considering setting up a "swamp-cooling" DROP setup to reduce elongation: setting bottom misting on a timer to occur 30-60 minutes before the lights come on, so that evaporative cooling drops the temperature in the tent and on the plants in particular until the water fully evaporates. Given how well-built it is, I have zero concerns about water leakage.
Is there anything to complain about? Honestly, the only thing I could think of would be that it's possible to get the zipper somewhat stuck on its liner. If it happens, ust back the zipper way back until it finally comes loose, while assisting it in the process. But honestly, it's been rare enough and non-significant enough it's not worth removing a point over.
All in all: seems to be a great tent!