Phone Integration with Business CD

Hi Guys from my research I have found two Threads with different approaches to this:



EnfigCarStereo Ipod AUX Bluetooth Adapters for E46 http://ift.tt/1ptXuLZ



BMW E46 Integrated Bluetooth and Voice Command for Less than $100 Pictorial DIY http://ift.tt/1tfgMv8



Anyone here (in Australia) attempted either and have feedback on the better approach? Im leaning towards the dension Route