In response to your second post: No, i havent' personally, but I have with Kammer's, and, eventhough they are expensive, I'm very satisfied with the product.
And your first post: Many/most cham's require to be misted or sprayed to drink. A dripping or misting system is the most convenient way to do this to avoid having to manually spray them 2-3 times a day. Generally, if you have a misting or dripping system, then you need somewhere for the excess water that falls to the bottom of the cage to go. I've got a pretty simple and cheap one I set up myself. If you're interested in the ideas, email me at [email protected] and I'd be happy to send you some pic's.