I just toyed around with the App Radio 2 I have before I packed it up to send it back to Crutchfield. I absolutely hate that radio. It is crap. Can't believe so many people love it.
imo i dont really care where it comes from as amazon has a bad *** return policy.
There both pretty good screens, the Kenwood 790 is excelon so you will get a better factory warranty, while the pioneer uses parrot Bluetooth which is one of the best Bluetooth you can get. Kenwood had them for years but dropped them for the 2013 models. Imo the Kenwood is a better overall screen, quality and proformance.