I like to leave 5 o'clock shadow/scruff, so I don't shave anymore, I just buzz it down with a trimmer every few days, other than shaving the edges to neaten up. Don Johnson circa 1985 swag like you read about.
In the event that I do shave, I'm not that picky. I'll use any disposable blade, I've honestly never seen a drastic difference between them and more expensive ones. I use any shave gel for sensitive skin, Edge, Gillette, whatever. If I had my druthers though, I'd get an old school straight edge razor shave from a barber, those are the shit.
Gillette mach 3 or something (manual razor) and Gillette sensitive skin shaving gel. I used to use an electric razor but it cut my neck up so bad I had to switch. Manual razors work waaayyy better. closer shave