I haven't owned a Cephalotus before, I hope to soon though!
I think they are charming little plants and awesome unique pitcher plants.
However... I really haven't gotten into the obsession over them. It's a little hard for me to grasp. I wouldn't pay as much money as some people do for them because they will always just be a small plant.
IMO there are numerous species of Nepenthes that are so much more colorful, savage looking, exotic, amazing, etc..
Ceph's are awesome though. Maybe when I get one it will grasp my soul and never let me go
But for now, I find Nepenthes to be the most awesome plants in the world.