That seems to be the trick for me. I've found if I use my Tech, Merkur 34c or Hoffritz slant I get a great shave with a Feather, Astra or Gillette silver blue. If I use my Old Type or New Deluxe I get an equally great shave using a Personna blue or Crystal blade. If I use the more aggressive blades in the Old Type or New Deluxe I get a close shave at the cost of having several weepers in the process.