Personna Med Prep blades. I started using them two years ago and have never looked back.
My safety razor is a 1964 Gillette Slim adjustable.
Personna platinum DE here. Never heard of Med Prep. The platinum are as nice as old Gillette Platinum Plus. Razor is ~1990 Gillette like pic in comment 28. Soap is Col Conk. (Amazon, all under $20 / year)