Let interject some facts into the old Machine blade sharpness vs SR sharpness
The Voerhaven paper actually measured the edges
The sharpest DE edge they found was at .31~microns vs the sharpest SR at .32~microns
that is pure measurements
What isn't measurable is Comfort, we know that stropping does something just like we know that the coatings on machine blades works also
We know that SR Honing and stropping are designed to create a CONVEX bevel this imparts strength and smoothness on the face
We know this has actually made companies like Feather to try and emulate that bevel by using Micro beveling on their blades..
These are things we know, what we don't know is what is going to work best for an individual on their face... Only the guy in the mirror knows that
I like the Feather AC and the CJB that
@Keithmax sent me both work fast and are relatively smooth on my Hollywood Face

I also know how to hone and strop pretty darn good so my SR's are my goto shavers
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