1st of all, i must stress i would not be doing this if the ios7 worked as all the previous ios worked. i have owned apple portable devices since the 1st gen ipods.
since ios7 i have spent 100 hours of my time (over two weeks work). i talked to apple senior tech (paul reyes) in california on several occasions. sent sync logs/videos/etc etc, tried all the work arounds, scanned my mp3s with front end, rebuilt libraries, reinstalled itunes and windows 8, reset from backups and clean reset and synced all without the same results. after every update i have had to try resets from backup and sync from factory resets. there is no one thing/pattern to get the phone to finally sync my music & videos.
if it was corrupted media content or files surely it last ios7 update i couldn't sync from the backup and had to try 4-5 times as a factory reset. i can't go through this over and over evrytime there is an update or wait any longer for a fix. this is why have moved away from the iphone.
for what it's worth i have friends that have 4's and 5's and report no sync issues at all.
got the note 3 two days ago so on a steep learning curve.
tried various itunes to android sync apps/software:
mobilego (free): crashed my system
doubletwist (free): slow and un-intuitive
isyncr (free trial version only allows 100 songs transfer): the best of the bunch (paid £2.99 for the full version)
it's been a learning curve for sure but isyncr did the job. it loads and then launches itunes. it scans itunes and then you can select playlists/artists/albums you wish to sync and where you want them saved (phone memory or micro sd memory card). it means i can still use itunes, it just takes a little bit longer to get it all going.
now i have the 6000+ tracks on my note3 and the 125 playlists. i have also simplified the screens on the note to make it feel more like the iphone.
conclusion: all these itunes/android sync programs are good for playlists and music tracks. when it comes to movies and photos they will only copy over all photos and videos in the itunes library. you can't choose which movies/photos as you can do in itunes/iphone sync. i've had to put selected video & photos on the sd card using copy/paste/drag/drop.
the note is just great. very nice screen. lots of free android apps. i have all the apps for free that i had to pay for on my iphone with apple. now i have all my media on my note. it's now the same as my iphone.
the note 3 makes my iphone 4s feel like a nokia 6110.
i will be keeping the note 3 and outing the iphone. if this post gets pulled then you know apple are monitoring (but maybe not listening)