I've bowhunted from blinds since 1993. I used to make them myself from pvc pipe,a camo tarp and some mosquito netting. I wish I had the money back that I have spent on all the "other" blinds instead buying a DB. I have had poles, hubs, zippers, you name it, I've had it broke. And, I'm not rough on my stuff, by any means. I was just sitting in one of my "Other"blinds, turkey hunting, one day and I heard a pop. One of the hub connectors broke. Save your self some grief and money in the long run, buy a Double Bull Blind. Its expensive but you won't have to buy another one if you take care of it. Its the best made and quietest blind I've ever seen or used. JMHO, YMMV :D
David