I agree, Spegel is the master. To me, his are the absolute best.

I bought a set of the factory Dymondwood grips like the set you have and promptly sold them.
You can see the sharp contour on the left side of the grip that sits over the top of your middle finger. This felt very uncomfortable to me. The pics easily show how much more radiused and rounded this area is on the Spegel grips, making them much more comfortable for this user on my Centennials and Centennial Airweights.