Put in a Parker blade in my week old Parker 91R. Have to see on second shave with it. So far, frontrunner is Wilkinson from Germany as smoothest and most efficient, with least clean-ups. Have yet to put in a Feather...
Blade Feather Hi-Stainless 2nd Use
I have never used this fav razor and fav blade combination before...until today and wow!! Super crisp, silky smooth, and very comfortable in 3passes for a dolphin smooth finish. Awesome pairing!