I've tried many different blades thru sample packs but always come back to my Wilkinsons.
Contrary to what I've read here, I honestly cannot remember getting a duff blade and I buy Wilki's by the hundred.
Always good for 4-5 shaves before Dearly Beloved grabs them for her legs!
I stumbled across a package of the Wal Mart Wilkenson blades and damn near thought I was going to pull my face off. They were in the R41 at the time..maybe that made a difference.
I am glad they work for many people though...................