They don't make any more noise than the rain does hitting on the other limbs, trees, etc.... . I have no idea which brand mine is....but if I didn't have it....I wouldn't have hunted a few times, last year.
I didn't shoot anything while I was using it.....but I know I dropped it out of my stand (prior to setting it up) the morning I shot my 8-pointer, last year. Thank God it didn't rain.
Rob/PA picked mine up for me. If he sees this....he can tell you which one it is.....but it's got a big coverage area.....and it's easy to set up.