Here is what I look for in a climber:
-Lightweight (gonna be carrying it on your back through the woods, maybe for long distances)
-Compact when on your back (I don't like them large or bulky on your back, makes getting through the woods harder, esp in the dark if they bang or hang up on things)
-Sturdy (no need to elaborate)
-Simple (I do not like to have things like nuts, bolts, pins, clips, etc that you need to remove and could drop or could make noise or install during set-up and pack away)
-Ease of Set-up pack-up (need to be easy to use with fast set-up or pack away, that is not cumbersome or complicated)
-Grip on Tree (must grab and hold really well -- you must feel secure)
-Quiet (Must set-up and pack away quietly, must also not creek or make other noises while in it, must climb quietly, must carry quietly)
-Not uncomfortable (It doesn't have to be a lounge chair for me)
-Ease of shooting from stand (I like open stands)
-Weather Impacts (must not have fabrics or parts adversely affect by wet conditions)
Considering all these features I choose the Lone Wolf Alpha-Climber. It is light weight, packs down to less than 3" on your back, does not inhibit your movement through the woods, makes no noise on your back while walking, it is a breeze to pack/unpack, it sets-up fast with no removable peices (I have timed myself and I can go from on the tree to on my back in just over 1 minute, or vise versa), it climbs silently, it grabs the tree exceptionally well and does not move, it is strong, it is solid, so no hollow tubing to echo sounds, It does not obstruct shots in any way, weather has no affect on it. It is not the most comfortable stand out, but I have stay in it for up to 6 vhours without discomfort -- they have a new version with a more confortable seat. There are really no negatives to these stands.