I think it should be Summit or Lone Wolf. I have a Summit Viper and 2 Lone Wolf Alpha hang ons. I like the Summit but there are a couple things I would change on it. I have a the Viper model that is probably an 02 or 03 so they may have made those changes as I haven't been in the market for a climber. Nothing major but some things that I have noticed while spending a lot of time in the stand.

Hang On- hands down Lone Wolf.
Climber- Lone Wolf is definately up there but you are going to pay for it. Summit would be very worth looking at.