I have one and really love it. It is a bit stiffer/noiser material. The blind I don't mind so much, but the case needs to get broke in a bit. I recommend breaking it in like a new still pair of coveralls. Dumping the blind out of the case might be a bit noisy too, but if you get your case broke in it seems to quiet down. To me the I5 seemed to be much darker - which is awesome. Not sure if it is any heavier, but I am sure it is not enough to notice. I really like the window setup also. No matter what way a turkey comes you don't have to worry about getting skylined through a big open window like I feared with the BS5 or whatever it is called. I personally think it was money well saved. Great blind!!!