I was fortunate enough to be on the Tesco train for tryout of these blades. Ron (Guenron) was kind enough to coordinate the train and I was first on the schedule for the westbound train. So far in my DE experiences, I have tried Derby, Swede Gillette, Merkur, and Israeli Personna (my favorite up to now) blades. I wasn't expecting a whole lot from the Tesco (being a generic supermarket type of blade) when I loaded it up in my Merkur HD and cranked up some mantic superlather (Nancy Boy cream...