I use a Merkur safety razor, but most often I use a commercial shaving cream like Gillette as I don’t have the time it takes to break out my brush etc.
I look at it as I get the benefit of cheap, close shaves, without the longer process of using my brush to lather up. Maybe if I had a nice badger brush I’d feel differently.
As for the blades - Astra are a good general purpose blade I like. Feathers, as someone else mentioned, are wicked sharp, and require extra care.
Moving from cartridge expect to take some time to get the technique down. You can’t go as fast.
Enjoy!
Data privacy is a concern of mine.
Car makers see technology as a data mining opportunity to force us to use their shitty infotainment systems to track our every move and interest, and then milk us with subscriptions.