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)
https://www.robbinsinstruments.com/collections/graft-prep-personna-double-edge-prep-blades
I get the Personna Med Prep blades by the box of 100 from this outfit. I tried 6-10 different brands of blades when I started using a safety razor three years ago. These turned out to be the best for my skin and razor.