I have heard great reveiws on the ASAT, and have personally seen the double bulls. The double bulls are definitely nice, but I still am not convinced they are $400 worth of nice.

With that said, a blind I have personally seen (on display only at Gander Mountain) that you don't hear much about is the Ameristep Intimidator. It has the 360 degree viewing capability of the double bull, the heavier non reflective fabric, and silent windows that can beadjusted from inside w/ magnets. Plus it's only $249!!