I used to use Wunderlist because it had a GREAT widget on Android. Then I switched to Evernote when I got an iPhone. Now I'm in a hybrid of real pen and paper and Evernote. Eventually I feel I will go 100% pen and paper. I use Pocket for saving things on the web that I want to come back to.
I've found that because I work with computer SO much that I need something analog to bypass that resistance to using a screen after a long day on computers. I have two notebooks. One strictly for work that I treat like an Engineers Notebook, 1-page a day, date at the top, sign off when the page is done, etc. The other I use for personal stuff and usually is just a to-do list.
I've been in the Dev world for about 4 years now. When I started I was also undertaking a reorganization of my life as well. Tracking all this was initially done digitally, but I found myself too often forgetting to update those digital mediums because of screen burn out. I actually use a system exactly like yours, though I have 3 notebooks: Engineering work notebook, A page a day dated listing my todos for the day and any insights when solving them; Daily/Weekly planner to track appointments and keep myself on task with personal goals; and a personal journal to record thoughts and feelings on everything from daily life to large philosophy questions.
The one thing I wish it did have a search function lol.
EDIT: A big reason I pushed away from digital and on to physical was distractions. Paper notebooks dont have the majority of human knowledge and world events just a click away.
I'm still looking for THE epaper notepad that works well for note-taking, but also reading emails, managing a calendar, etc and that is also running Android.
I've found that because I work with computer SO much that I need something analog to bypass that resistance to using a screen after a long day on computers. I have two notebooks. One strictly for work that I treat like an Engineers Notebook, 1-page a day, date at the top, sign off when the page is done, etc. The other I use for personal stuff and usually is just a to-do list.