I used to have a Kona Hoss Dee Lux :D Great bike, I did hundreds of miles on it and even took it to the Alps one year. Sadly it got stolen from outside my apartment.
I've got a Santa Cruz Blut LT 2012, which I built with parts from my previous bike, a Commencal Meta 5.5 Carbon. The Blur is easily the best frame I have ever owned. The geometry is spot on for climbing and descending and it soaks up big hits with no problem. The reliability of Santa Cruz was another factor in my purchase.
I've not ridden a Chameleon, but based on my experiences I'd definitely go for a ride on one and no doubt you'll be smitten afterwards.