I went through a stage of collecting a load of different stones and had a bunch for a while (CF's, C12k, Dalmore Blue and all sorts!).

In the end I found I gravitated to the same few stones every time which for me was Shapton 1/4/8/16k and followed with my Asagi. That gets me a killer edge on every razor and I've yet to find one that combo didnt work for.

So in the end I found exactly like you did - That I had a bunch of stones collecting dust so I started getting rid of the ones I wasnt using.

I still have a few of them, but for the most part I've flipped the ones I didnt really use!