Cabela's sells a Hawk double tree stand, I forget what it's called, but it's the most comfortable and spacious stand I have ever sat. The seats are like poolside patio chairs, super comfortable.
Only down side is the immense weight, but it's totally worth it to my wife and I. Just under $200, 18ft at the rail, and uber comfortable. We bought one last fall, i have already bought two more for next season, and sold the double stands I took down last wk. I try to normally avoid recommending products over others, but I can say I don't care to sit in any other ladder stand again after using this one.