OK I've wasted a good day or more trying to sync my newly upgraded Outlook 2013 (using Windows 7) with my iPhone 4 via iCloud. Sort of wrecks your Outlook & has bugs (eg repeating weekly appointments jump a day after the 1st one).
Going to try using iTunes which I had with the 10 years younger Outlook 2003. Only issue really was all day events showed a day early on the iPHone! I thought I had to use iCloud for this version of Outlook for some daft reason, so I'll see how that goes.
Does anyone have this running nice with this combination?