For the last 10 years I played Zon fretless and fretted 5 strings, both with 17mm string spacing. A few months ago I switched to a Sadowsky to work on my slap playing. Well, 19mm spacing certainly does make that easier and I love the sound of the Sadowsky. But after going back to my remaining Zon fretless last night, I realized that I'm *way* happier (as are my hands) with narrower string spacing. I know that Zon is 17mm and EB is 17.5 (at least for Sterling and StingRay). Any other notable nice basses? Another option is that I'll just go back to 4 string for fretted and get a J-style something or other. The reality is that I'm not a slap player, and instead like a very fast fingerboard to be able to work.