A few weeks ago I picked up a pack of Derby Extra blades at a local Sally Beauty Supply and they're my new favorite blade. I get no irritation and a very close shave every time. It seems I'm in the minority, as most of the reviews for Derbys I've seen have been very negative. I'm going to buy a box of 100 when this ten pack is gone. I used to use Israeli Personnas, but the Derbys are just a little bit better. Does anyone else think Derbys have an undeservedly bad reputation?