I believe there are four domestic-sourced Personna blades:
Made in USA
Personna Platinum Chrome ("Walmarts", "drugstore private labels")
Personna Platinum Chrome ("Barbers")
Personna Stainless Steel ("Labs")
Personna Stainless Steel ("Med Preps")
The only difference between the Walmarts and the Barbers is the Barbers are scored to be broken in two and used in a shavette.
The only difference between the Labs and the Med Preps is the Med Preps are sanitized (washed) for use in hospitals.
Hope this helps.
Thanks,
Mike
...Yes, both the 5-pack and the 100-pack contain the same comfort coated blades. Even though they have different markings (directional arrows are printed on the blades in the dispenser), there are no differences in the blades or the coating process. If you have any further questions, please do not hesitate to contact me.
To me the preps still shave great since the takeover. But the so called blue lab old box are great, but the new light blue box are garbage.
Which box is the light blue box? Can you post a picture?