Whats everyone's opinion on the best/high quality material for brushing in blinds. I'm tired of using burlap and the cheap netting material. Mainly will use existing brush but some of these trees were stick tripods in need all the help we can give them.

Use hog panels and wire your brush to them.

I have bought some used fence fabric, holds up great no fading, no tearing, strong. Use this fabric as an underlayment then brush over the top. Don't have to have so much brush because the fabric underneath covers movements.
I used just fabric on a ladder stand, been up three years still good. Fabric was black and dark green.

I've seen deer bed down in old utility sheds, under trashed out flatbed trailers, around broken windmills. I think any blind with some soundproofing will work and worrying about "edges" is unnecessary. Just get the building in the location asap and leave it be so the critters can get used to it. A little extra feed wouldn't hurt.