I was recently introduced to Super-Max Blue Diamond Platinum Coated razor blades.
A wonderful razor blade!
They gave me a smooth and close shave. I found them to be every bit as nice as Derby and Personna Blue razor blades. As always, YMMV.
Razors and Blades
Supermax Blue Diamond Platinum Double Edge Razor Blades
Personna Double Edge Razor Blades
Derby Extra Double Edge Razor Blades
Merkur HD 34C
Edwin Jagger DE89Lbl Lined Detail Chrome Plated Double Edge Safety Razor