Maybe cause there are poly boards and Poly boards?
I agree with the sound issue, I can't say for sure one way or another about edge longevity as I rarely use a poly board, but I hate hearing the sound compared to my end grain boards. I've never used a sani-tuff but I can bet I would have to change technique a little bit. Every once and again I'm too heavy handed on the end grain board and the knife gets stuck just a tad in the board. Not enough to stay there, but enough to throw off a cutting rhythm if you're in one.
Canada's Sharpest Lefty
I admit, my 210 gyuto and my Carter funayuki have gotten pretty deep in my board once or twice!
Originally Posted by Potato42