I’ve been using Evernote for years, along with Keep for mostly short-term lists, phone numbers, etc. a diary app for long-term personal and a database for more data-driven stuff and logs. I’d be in real trouble if I had to search through stacks of paper notebooks to find something. As long as you’re not strictly on one platform digital wins hands-down. Any app I use has to have good ‘send-to’ functionality because for example some stuff in Keep eventually ends up moved to Evernote or to my diary.