Sounds like I'm agreeing with most.  I have 2-3 different Summits.  A couple of Vipers, and one of the open-faced ones.  Although I prefer the Vipers.  I like the false sense of security of the bar in front. 

Off topic, but tree stand and back pack manufacturers need to get together and design a COMFORTABLE system for carrying tree stands!  Point is, don't expect any climber to be comfortable to carry.