Originally Posted by alexwhittemore
The bluetooth certainly is convenient, but I'm not sure I'd pay the hundreds of dollars for the OEM USB - it's not terribly useful. It's convenient, but you're better off going third party with a Kufatec Fiscon (most expensive, most useful), Mobridge, or Parrot (least OEM, but still gets you BT, BT streaming stereo, and USB).
And unclear. The Professional HU is prerequisite for hifi, but I don't think means you have it automatically. There were periods when american cars came with hifi as the lowest option, but I'm not sure where your car falls.
from what i've read, the same professional HU is used for normal, hifi and logic7 audio setup. it's just what the HU is coded for that makes the difference.