I still use Evernote. Usable on my Windows PC, Mac's, work laptop (Windows), iPad, and iPhone.
I tried OneNote, but I had a heck of a time getting all my Evernote notebooks imported into OneNote. What a fiasco. I gave up eventually, as it was taking too much time, and making a complete mess of all of my docs, as it wanted to create a new notebook in OneNote for every single note I had in Evernote. The amount of OneNote notebooks that MS's import tool was creating was just crazy.