I've tried several natural blinds. The last one I made I spent hours cutting rivercane and weaving it together between branches I screwed to saplings. When I got it finished, it looked like something off of Gilligan's Island--it was most impressive to my buds when I showed it off. Unfortunately the deer weren't the least bit impressed--they could still pick off the tiny bit of movement, then when the cane dried and started "shedding" it really opened up. In short, it was worthless. The blind I set up there has been great though--my son killed 3 or 4 deer from it last year.
I've never used a DB, but my best friend has one. He likes the blind I got a lot better. It's bigger, MUCH faster set-up/take-down (took me a tad over 40 seconds to set it up, 38 seconds to take it down and put it in it's bag--and I'm slow and clumsy), and cost about 1/3. I'm loving it so far.