It really depends on where you are hunting, what the trees look like, and how often you will be hunting there. A climber stand is good for spots where you can't leave your stands, and you have to cary in and out. Then you can take it in, set it up, and climb. The downfall is that you have to have trees that have no branches, and they can be a little noisier.
A strap on is nice if you can leave it in the tree (unless you like taking it in and out) and you can use a tree with more branches.
I guess its up to you.