I have a Viper and really like it. It is so comfortable I can sleep in it for hours LOL.

The only thing I don't like is that the cables stick down below you when carrying it and so climbing over downed logs or something can be a pain. If you kick your feet up behind you to high step something you will hit the cable and sometimes the "V" where it hits the tree and OUCH!!! So, it takes a while to get used to that. Once in the tree though it is more comfortable than any other stand I have used.