I've been using Anco Transform blades for over 2 years now. And by that I mean, the same blades. These are absolutely the best blades I have ever run - hands down. They are a Hybrid design that have the aerodynamic shape like the beam blades but still have springs on them. Anyway, they are normally $7.50 each but Rockauto has them for $3.50 on a wholesaler closeout I believe. I picked up an extra set to replace mine but they just keep going. I can't recommend them enough. I have used several different brands and styles (including the expensive ones) and these are definitely where it's at!