I just started using the HB sport 2 months ago. It came with a HB3 blade and that worked very well, smooth shave no issues. I then bought a pack of 2 blade sensor (or sensor excel can't remember). First shave was bad. a few nicks and razor burn. The more I used them the better it was but have still get nicks from time to time, and still some burn. I want to go back to the HB3 blades. I saw some posts on the CVS m3 blades being the same, but I think they may have stopped making these. Is there anything else that is the same as the HB3 (but cheaper) or should I just go buy the actual HB3 blades? Thanks