RE: Easiest climber to use?
I can only give you a recommendation from what I've used.....which is the Summit Viper.
Easy to climb with (though I'll tell ya.....it takes some getting used to going to extended - above 20' - heights). MOST comfortable stand out there (IMO). This allows me (I think) to stay on stand, longer.
Rob can attest to how quietly I can get ready and climb with this stand. It's really quiet. Make sure (if you go the Summit route) you get the aluminum version (if you can stand the $$). It shoud run you +/- $260????
Good luck. LOTS of great climbers out there!