An extremely smooth and nicely efficient shave. The Black Ninja Super Platinums work incredibly good in the Guido with the perfect amount of blade feel and ultra comfort. Honestly, I haven’t tried a blade that did not work well with the Guido with the Feather perhaps being the best so far but, these & the Gillette Minora are very, very close to the Feather in overall performance with slightly better comfort and durability over the Japanese steel. The Guido is a heck of a value and a superb tool especially in this Brass alloy. I hear there might be a run in Stainless which should be interesting especially for those that don’t like Brass because of the patina it develops and the extra upkeep in maintenance. We’ll see what Steve over at Alpha drums up next. If the Steel version is shiny, I just might bite.