Well, I finally got tired of buying all those ridiculously expensive multiple blade refills ( and they do shave well, when they are still sharp ) and got an electric razor- no, it’s not quite as close a shave as a blade, but you can touch it up later in the day in just a few seconds.
If 2 blades are better than 1 and 3 blades are better than 2 and 4 blades are better than 3..............why not 20 blades.