The C-60 Massad Ayoob model is most definitely one of my very favorite Spyderco models ever. It's been in my top 3 for as long as I can remember. The 2011 Sprint Run with the G-10 handle is second only to my M390 Military as being my all time favorite EDC.
The serrated/Spyderedged version of the Ayoob has been rated by some hard core fans as one of the very best Spyderedged units in Spyderco history. One Brother did his own independent meat cutting test with astounding results. He discovered that a Spyderedge with a pronounced "belly" has many advantages over other designs offered in serrated/Spyderedges.
I can only wish that we will see another Sprint Run of the C-60. I would love to see one with another G-10 handle and hopefully a newer/better blade steel. I was told by Spyderco that Mr. Ayoob himself didn't like his design in SE
I find that most unfortunate because I would love to see that variant return as well.
Thank you so much for putting up one of my most favorite Spyders of all time