I have been using various modern blades from a sample pack for the past month or so with mostly sub-par performance. My joy of shaving had been diminished somewhat so tonight I cracked open a pack of Osco blades that I bought from a member here on the BST a few months back. They are private label 80's Personna Super Platinum Chrome blades in disguise which are in my top 2 all time favourite of vintage blades. I used that same soap/razor combo as with the modern blades from the sampler pack and the difference was night and day, just incredible. Smooth, sharp and no effort whatsoever for a near perfect shave. It made me question why I even bothered ordering the sample pack other than wanting to try something new. This is not a knock on modern blades, as I found one in my sampler: Sharp Titanium that gave a much better shave than all the others I've tried recently and in the past before going the vintage route.