I need a new climber. My son is using our Viper.....and I need one for special occasions. I want:

1) comfort
2) rail (hey....I've been known to get in there early and nap) and I think someone makes one that the rail will drop down on.
3) adjustable to tree when at desired height
4) quiet set-up & ease of set-up

Does such an animal exist???

Thanks.

Jeff