Aftertesting both the Lone Wolfhand climber and the sit & climb I opted for the sit & climb, for me it was much easier to use.
As for the summit climbers, the Goliath has the biggest platform and the upper half also has arm rests, comfortable stand, but if not adjusted to the tree properly it moves a bit.
The climber I now have my eye set on though is the New "Loggy Bayou MEGA Transformer"--I tested this stand and it's really a great climber as well as extremely comfortable--you'll fall asleep in the thing without a doubt!!!