The new Evernote Hello 2.0 looks really interesting, but I think it is lacking two key features:
1. Ability to synchronize with my Mac contact list.
2. Desktop app (menubar app would be even better).
At the moment, I find Cobook to be useful because I can view and edit contact info from the menubar. Cobook syncs with my contact list instantly, so I am not tied to the app forever and my contact list remains intact and up-to-date.
Evernote Hello has some nifty features, like business card scanning, but until it deals with the 2 issues above, I can’t imagine using it.