i dont know any of other stands but a SUMMIT.i am 6/1 210 pds
i bought 180 max.why, its bigger than viper, i like room.
top section you can wear your heavy clothes,viper is tighter.
you can face tree.

best advice is go try the stands if you can before buying at show or store........

but you cant go wrong with viper,180 max, goliath,titan.

only difference is room which adds a little weight but in my book, COMFORT IS NO. 1........