I need to buy a final polishing hone. Money NOT being an issue, which finishing stone should I buy? Coticule, Naniwa 12k, Shapton 16k? Thuringen? I don't want to go looking for collectible Eschers or impossible to get hones. Currently I am only using a Norton 4k/8k and Green paste on a strop. I don't know if my razors make a difference in the selection but I have a Livi/Takeda, a Livi Bergamo, Livi/regrind, 2 Filharmonicas, 2 Theirs, and 2 Dovos. All are in very good shape.