If by choppy, you mean the Bluetooth cuts out about every 20 second, then, yep, I've got the same experience. From calls to both Apple and Sync, they are each aware of this glitch. Has Sync completely refused to recognize your iPhone yet? I have to periodically disconnect the ground from my battery to get Sync to recognize my iPhone through the USB plug. And, have you figured out a pattern to when it reindexes? Mine does it randomly (sometimes quickly, sometimes after 20-30 minutes, though), even if I haven't changed the content of my iPhone in weeks. Don't get me wrong: I love my iPhone and I love Sync. But, I wish they would just learn to get along and play nicely together. Having more Apple gear in a car leaves me a little cold.