I am trying out how to best sync my contacts. I have most of my contacts in an Excel SS, so it's easy for me to export them into a csv format with whatever headers are needed. I also have some contacts in Outlook. I create the csv file and import it into Outlook fine, with what I want as "groups" in categories. I have multiple categories/groups per contact. Unfortunately, it looks like these won't become groups on the iPhone. I could use Google contacts, but while I can import into a single specific group, if I were to import the same items into a different group each time, I'm thinking I'd end up with duplicates. And I'm open to any web or PC-based contact manager that can handle importing csv files and import multiple groups per contact. Then, I just need to get it into the iPhone with that group info intact. Any suggestions for an app or method?