Not worried about the cost but are there any opinions out there on the Kenwood DNX9140 vs the Alpine IVA-W505/P1? I have heard that the Kenwood has a slightly better nav unit since it is made by Garmin. How about the audio quality? Does one have an advantage for an audiophile once you have the Imprint audio processor for the Alpine? Is the user interface easier, more intuitive on one of the units? Thanks for the info!