I just got a SummitViper SS this year, the stand is great I really like how easily it climbs and sets up. I cannot imagine a better seat system, I sit in this thing for 5+ hours at a time and my legs don't fall asleep. Their larger version of the samedesign is the Titan its rated for 350 lbs. http://www.summitstands.com/catalog.aspx?catid=summit%20titan