Since Rocket heads came out,I have a new " gage" for blade sharpness.If I buy a head,and the blades are ATLEAST as sharp as a Rockets blades,,then I know they will do the trick.I used to use N.A.P. blades as my " gage" ,,but that just did' nt work.

NO OTHER BLADES CAME CLOSE !!!!!!!!!!!!!!!!!!!!