So I'm definitely looking into getting a fretless bass here very soon... My question is, which fingerboards are strong enough to stand up to roundwounds and some slap playing? Is a phenowood/rockwood/diamondwood board my only hope? I've been looking at a Zon, Sadowsky, or possibly (and a lot cheaper) a Peavey Cirrus. The Zon would of course have a phenowood fingerboard, Sadowsky would have a poly coated ebony board, and I believe the Cirrus has a rosewood board of some sort. Which of these can stand up to those rough roundwounds without needing work after a short time?