I have been shaving my head for a number of years now I’ve tried different razors ( cartridge, DE razors ) with mixed results.
Recently bought a Leaf razor and it has been the best of them all gives me a great shave every time.
Have only used leaf razor blades in it so far so looking forward to trying different blades soon.
The only blades I have ever thrown away unused were the blades included with my Leaf razor. I used a set of three for a few shaves and then tried some Shark Saloon blades, and tossed the rest of the Leaf branded blades.
I have not noticed any blade difference when shaving my face with a DE razor, but ror me, the difference with the Leaf blades on my head was very noticeable.