Canada Fuller KT88-Anyone using?

My curiosity has increased on these tubes and I'm sort of chomping at the bit to give them a try. They've been on the market for a few years now I think. I've researched several forums but most of the chatter is about where they were manufactured and very little as to how they sound. So has anyone else tried them in their amps, or heard them perhaps at a show or in someone else's system? (Db2sub1 do you still have them in use?) I would be particularly interested to know how they compare to the Gold Lion's that I'm presently using in my Music Reference RM200. Thanks if you can help.