So I'm looking for my next hone. I've decided to go with a natural because of the love of the coticules on here. Here's some questions first to help me make sure I'm making the correct decision. Is there a difference in the actual finish from a standard to a select grade coticule? I've been looking at either a standard or select Belgian Yellow. The other choice is a combo stone with the Belgian Blue on one side and yellow on the other.

Belgian Yellow and Blue Coticule