Google Keep vs Evernote - Requirements for your note app
Personally, I use a note app to store ideas, observations, travel tickets and debts that should be quickly accessible.
This is how I make my every minute productive
Power methods for knowledge workers to get your productivity to the next level: Technology, Ergonomy, Work habits and Task automation.
Wunderlist - Simple and reliable task list
According to my experiences Wunderlist task list is extremely robust choice. Read more about my recommendations.