My sharpest would be Nacets just ahead of Permasharps then GSBs and then the Gillette Platinums. For me the Personna platinums and Wilkinson sword feel as sharp as the Gillette Platinums. Hope this helps.Which of your blades do you consider the sharpest on your first shave? Curious if there is a pattern where the sharpest blades wear the fastest as is the case with Feather for many B&Bers.