04-07-2014, 09:01 AM
In my purely anecdotal experience I've found a USB connection usually gives the best sound quality from a smartphone, that's another reason I'm not itching to install bluetooth streaming in the VW. That being said, there's no noticeable difference in quality between the USB and BT inputs in Lauren's 2012 Kia so I guess the new cars are getting better at it. I've never liked using a straight Aux connection, you have to fiddle with the volume levels on the device and HU to get it to sound half right.
Now: 07 Porsche Cayman S | 18 VW Tiguan
Then: 18 VW GTI Autobahn | 95 BMW M3 | 15 VW GTI SE | 12 Kia Optima SX | 2009 VW GTI | 00 BMW 540i Sport | 90 Mazda Miata | 94 Yamaha FZR600R | 1993 Suzuki GS500E | 2003 BMW 325i | 95 Saab 900S