Thanks for your terrific explanation. I shave daily so having the extra flat and finishing cutters probably doesn’t matter. Occasionally, I have gone several days when I was sick without shaving. I must not have flat hair issues because my Braun nor it’s predecessor has not had a problem giving me a great close shave. From your explanation I won’t be spending any more for a replacement shaver than the Panasonic ES8103 or the Braun seven series or their replacements.