My wife has been using a DELL Axim 51v PDA for many years now and it finally broke down. She is looking for a PDA replacement. To my surprise nobody sells them anymore. So I am looking for an Android mobile phone as a replacement. She already has a simple phone she likes so she would not be using this Android phone for making phone calls nor does she need or want a data plan. All she wants to do is use the calendar for scheduling, todo lists, contacts, and tasks -- nothing more. She wants to use Wifi to sync. Are any of the Android phones a good candidate for this and is this even possible? If not what else would be a good candidate? What about the Nexus One?