Here’s my take, I like to use:

SPRINGPAD for simple general notes that I plan on sharing with others (usually not work related).

EVERNOTE for serious note taking for myself(often for work).

GOOGLEDRIVE/DOCS for specific office documents I want to save and sometimes to share (work and play).

DROPBOX for using custom portable software and their related files. I really like the old application Keynote to organize scripts and coding.