Check out the game tamers line up, I have two of their bigger ones, excellent loc on's. I could go on and on about them, comfort, durability, safety and so on... I like the fact that they are adjustable to the tree, you don't have to have a straight tree, makes all the difference in the world when there isn't a straight tree where you need to hunt and you can sit in it all day, it's that comfortable....
This is the page for the big one... http://www.gametamers.com/tree-stand-30-p-2.html?cPath=cPath&zenid=a064c6c05fad432288405 21327adfd8c