I been using the Vipers since they came out in 96 (?) I think. I wouldnt trade them for anything. I bought a Goliath for this year just for the extra room (210 pounds here) and I have to say Im in love. This is my 4th new Summit and I think its the best yet IMO. As far as time needed to set up and climb it doesnt take but a few minutes from back to hunting. I been doing it long enough to do it with my eyes closed. The rapid climbers and new cable locks are a dream. Call me a very happy customer...again..lol.