Been using Conboy/Tomboy synced using Ubuntu One for about a month now, works great, best note-taking solution I've found so far; i even use it for most of my word processing, as I like its simplicity, organization, and instant save functions.

One thing I was wondering, though -- why don't Maemo autocomplete suggestions come up while working in Conboy on the N900? It seems like the default for most other applications, including fairly straight ports from desktop linux programs, is to have autocomplete suggestions show up while inputing text. If this is a simple fix, I would suggest adding it into the next release, as it would give a bit of a boost in typing speed.