I agree with Dan. If you have trees picked out and prepared ahead of time, or are hunting in an area where the trees are conducive to climbers, then they are the way to go.
Short of that, sticks and hang on are my choice. I have the LW Assault that I use occasionally ...but on trees 18" and under, the Chippewa system is hard to beat. After the sticks are up, I can hang even the largest Chippewa platform with one hand, and be sitting in it safely in a matter of seconds. It takes me longer to get the Assault setup because you have to get two straps around the tree....while the stand is up there. I do not have the EZ hang hook, which would help, but you still have two straps to deal with....versus none on the Chippewa.
If Chippewa would pad the seat a little more and open the back of the stand wider to fit larger trees, they would have a near perfect setup for the areas that I hunt.