Jack, I have 5 ladder stands, 2 Cabela's, 16', 3 Ameristep 15'ers. the Ameristeps were cheaper, but do not have a backrest....your back rests on the tree, and that is not a problem for me.
Be sure to get one with a larger platform so there is plenty of room to stand and shoot. It is very difficult for me to shoot any direction other than to my right sitting....left handed shooter....if I shoot any other direction, I have to stand up because every ladder stand I've ever tried, the hand rails are in the way of shooting while sitting.
I don't like to leave them out year round because the seats and or backrests deteriorate being out in the weather.
Billy