...Holy shit. OneNote has Mac and Android versions now? I only stuck with Evernote this long because it was the only thing that would sync across all my devices.
I don't need collaboration, just an external memory store. How is OneNote for taking structured/organized, rich-text notes for a single user? I'll check it out tomorrow, and I might switch immediately.
rtf+Dropbox would fulfill 2 and 3 (with the right Android app choices, anyway), but 1 is somewhat dubious. Previously I've tried Treepad/Jreepad, which is absolutely perfect for 1 but fails the other two; TiddlyWiki, which mostly manages 1 and 2 but requires a lot of manual markup, and (since it's all in a single file) would have problems with 3 if one copy got out of sync; and Evernote, which mostly manages 2 with a few hiccups, does 3 in theory if you don't mind frequent inexplicable conflict warnings and occasional outright data loss, and seems to be trying to break 1 more with each new version.
I'm hoping to have time to look into OneNote today and see how it measures up.
In my opinion Google doesn't get enough credit for it's Apps offering. I see lots of articles on here and elsewhere that deride it as a 'search company' that 'can't build product' - but I really think they're quietly building an excellent product suite.