Having worked my way through 2 practice builds with cheap hardware, I'm ready to build the real thing. A 6 string fretless (headless) with Aussie hardwoods. I've had Bartolinis recommended to me, but the Delano Xtenders look really good to me... really good. With the Aust dollar, Euro stuff is cheaper than US at the mo too, so I'm thinking about that. Interested to hear of people who've used them. What do they sound like? Should I use one or two? Are they good for a passive setup? Any feedback/soundclips/ideas would be greatly appreciated.