I've run all of the Avery blinds and I currently own a Powerhunter and a Ground Force. 85+% of the time I run my Ground Force, but I'll bust out that low profile Powerhunter in certain situations.
Both of these blinds also fold up into a back pack style making them great for walk in hunts...
I would go to one of these recommended shops to get a feel for them, but then head to Craigslist to see what deals you can find.....or a good hunting forum classifieds
used my friend's for the first time last week to find my property border stakes....and it worked! Kind of has me wanting to do a little more walking around with it!