I use VIM for Python, LaTex and Haskell.

Ubuntu 16.04 Dell XPS13 9333

1. Disabling arrow keys has been a painful, but efficient process to realize how far they actually are.
2. My <ESCAPE> key is switched with <CAPS_LOCK> to easy my pinky finger
3. Aliasing W to w has saved me time, since I very often mistyped W! on file saves.