At least, that's what it seems like. I haven't heard anyone else even mention these and I just love 'em. I've used red IPs, Feathers and vintage blue blades, but I like the super thins best of all. I got hold of a vintage ST and it was great, but the modern STs are just as good for me. I have a medium beard and soft skin and I get a week's shaving out of each blade. I get them from B&B member dridiot (on eBay) and, with shipping, they cost me about 15¢ a blade, or just over 2¢ a shave. Mind you, I cork the blade after every use. I've just ordered another 300, plus I'm getting 60 of the platinums. I did just get PIF'd some Merkur blades which I'm going to try solely out of curiosity, but ST is my happy blade. They take a while to get to me as dridiot is located in Singapore, but I don't mind the wait.