I looked for one with a thick and soft seat cushion, padded back support and a bar for sitting on while climbing and. I spent a few extra bucks and got the viper X4 and it was worth it. The only thing I'd like to see improved is the adjustablity of the cables if it had twice as many notches on the cable I think it would be perfect. right now I get it close and use the adjustable seat straps to level out the seat.

The cobra is nice but I like having the bar infront of me for a gun rest plus it just feels safer.