I dont know a lot about brands and such but i have had experience witg tents... Ill be honest tho, there cheaply made.
Might i suggest building your own?
Its very simple and if your paying money for something cheap, shouldnt the price reflect that?
All you need is 1 1/2 pvc pipe to build the frame and
panda film to make up the walls (mylar works too but is a pain) use Velcro to seal the door and cut holes as needed for air scrubbers and such.
Its a very easy project and should only take about 1hr to construct after cutting pipe and film to size.
Im a diy type of guy lol if i see somthing i like, i usually build it for at least 50-75% less of buying it.