The problem you have found, isn't actually Centrafuse's issue...its Apple.
All the older ipods work because you can view the files on the ipod via the usb cable.
The iphone changed that, because Apple are asses.
Unfortunately it doesn't matter who you go with currently, you can't just access the iphone like you can the old ipods.
You should be cracking the s**ts at Apple unfortunately, but stay tuned, there are a few people who are trying some options to get around it!