I purchased the Treewalker Treestand at the Ohio Deer & Turkey Expo 2 years ago, and it is the best and most comfortable stand I have EVER used! One of my hunting buddies bought one at the expo this year. He told me this past weekend he'll never own another climber treestand.
It's light, easy to use, and extremely comfortable. It is also very safe. I have never felt safer in a tree as I do with this stand.
There are a ton of good photos on their web site - http://www.treewalkertreestands.com/