The "ONE" Blade - Which Would it Be?

Updated:
1) Gillette Bleue Extra (No Longer Produced)

Honorable Mentions:
Polsilver Super Iridiums, GSB, Perma-Sharp Super

Polsilver Super Iridium

Gillette Nacet

Polsilver..

GSB for me. I get 3 shaves per blade.

Gillette 7 o'clock yellow
For me across a range of razors they are forgiving and give both smooth & irritation free shaves of both my head and face

This is the one I prefer.

I get confused among the various iterations of Personna DE blades. I like whichever ones I got from Maggard's in the individual white wrappers. But if Personna shut its doors, I'd be very happy with either a Nacet or a KAI DE.

Gillette 7 o'clock yellow
For me across a range of razors they are forgiving and give both smooth & irritation free shaves of both my head and face

Finally got to try the 7 o'clock yellow. It was a good blade, and after 2 shaves I ordered a hundred. Then, after 4 shaves, I tossed the blade. Just wasn't working well.

I usually get seven solid shaves from a Nacet or 7 o'clock Black... Time will tell if this was a fluke or if I only get 4 shaves per blade in the yellows.

I get confused among the various iterations of Personna DE blades. I like whichever ones I got from Maggard's in the individual white wrappers. But if Personna shut its doors, I'd be very happy with either a Nacet or a KAI DE.

Those sound like they might be the Personna Super (Lab Blue) blade.

Kai Stainless Steel is my current favorite. And as luck would have it, they are relatively expensive and not as easy to find as many other blades.