Sorry to disagree, but I recently bought 100 of these, after using the Derby Extras (green pkg.) for a few years. I was perfectly satisfied with the Extras....usually got about 7-8 good shaves out of one blade. I decided to try the Premiums (based on the word "premium," I guess, thinking they would be even better) and bought 100 of those. Not only aren't the shaves quite as good, but the blades only seem to give HALF the number of decent shaves. I have read similar reviews on Amazon.....wish I had checked there before I spent the money. I guess blade preference is an individual choice, so I'll just change blades more often, and make do until I work my way through them. (Anybody who likes them want to make me an offer?? )
S'ok to disagree. Blades are a very personal thing. I would suggest next time, rather than make a blind purchase of 100 blades, try a tuck and then make a decision as to whether or not a larger quantity purchase would be warranted.