It took me a while, but I finally jumped on board the evernote bandwagon.
i was happy with the built in notes.app for my iphone and I was happy syncing it via gmail to my mail.app on my mac.
i got an iphone 4s, and donated my iphone 3gs to my girlfriend. who uses windows.
i looked for a solution for her to be able to use the notes.app and sync it with something in windows.
it turns out that you cant :(