To those of you who use both the coticule and the 12K, do you notice any major improvement in using the 12K after the coti?

One poster said the edge off the 12K wasn't better per se, just different than the edge off the coti. Is that the general consensus?

I have several cotis and have always been pleased with the edges I get. While I do eventually want a thuringian(sp), I am just curious if it is worth is to get the 12K.

I should point out that my honing progression goes DMT1.2K, BBW, coti, so it's not like I would be using it after a Norton or anything, it would most always be following the coti.