Kai (5)
Think I noticed some degrading of sharpness, which surprises me. Was expecting Kai to last a lot longer, but will give it a couple of shaves and see if it was just today.
Alternating between a RR Mamba 70 and a Slim. Yesterday was Mamba 70 with Personna Crystal shave number 10. Today was the Gillette slim with Astra SP shave number 2.