I own an Ameristep Silencer blind. It's pretty sturdy if you ask me. We had a storm roll through a few nights ago with supposedly strong winds (60+mph if I'm not mistaken) and when I checked it nothing was gone and nothing was out of place. The windows were pushed down a little bit, but no damage. It has 4 anchor points where you can stake the blind down like you would a tent. The frame is sturdy tubing and the fabric has held up nicely. My only complaint is that it's faded quite a bit since I bought it, however it does have materials sewn on so that you can put your own camo materials on the blind itself. The windows are high on the sides, but I don't think they're designed to shoot out of unless you're shooting with a rifle/shotgun due to how high up they are. The front window is ok...it's sufficient. The zippers are great and the inside of mine is absolutely waterproof. There are some small pinholes from the sewing process, but they don't leak. I'm glad I bought it since I got a pretty good deal. I think I took it home for $110 or so at Tractor Supply Co. if I remember correctly.
Now, with that said, I think the next time I decide to buy a blind, I'm going to go with Primos. They're significantly more expensive, but the reviews are much better. The reviews on the Ameristep that I have are bad, but I haven't had any big issues. I did notice after I shot my buck the other day that I must've clipped the edge of my blind's window which cut a very clean reverse V shape. No fraying or anything even after the storm came through. I'll probably take a lighter to it or a hot knife to seal the edges later on, but as of now it's good.