I'm waiting for my 5s to ship and I was wondering about iTunes, syncing contacts,calendars, music, etc from my iTunes. My spouse has a 4s and is using my iTunes account. When I get my iphone can BOTH use the same account? She has iTunes on her PC laptop, I have iTunes on my iMac. I usually sync and update her songs from my Mac. But I want my Mac to ignore her calendar, contacts, etc and use mine. Any advice?