add 1 more for linux, I have 3 linux boxes in addition to mac, 2 pc's and android tablet; being able to use evernote between all my things would make me use evernote instead of onenote (that I find more intuitive)
I have evernote on mmy imac, 2 pc laptops and an android tablet.. mostly I use onenote as I find it a little more intuitive, it is on the same devices, what would make me use evernote? a linux client.