The only e-reader I've had is an old Kindle Paperwhite I got secondhand. It's dumb enough to not get in my way and lets me transfer all my various pdfs and mobi

The only e-reader I've had is an old Kindle Paperwhite I got secondhand. It's dumb enough to not get in my way and lets me transfer all my various pdfs and mobi files from my PC via cable. It's due for replacement but I have zero trust that newer models would let me use the thing how I want.