I purchased this unit to replace an Kenwood Excelon DDX-814 with GPS and HD add ons. This unit blows the DDX unit away in performance, sound quality and user friendly menu navigation. I am using the units interal amplifiers to drive Focal component 6.5s front and Focal coaxial 6.5s for rear. I have a small soundstream 8" powered sub under the seat. Everything sounds great for my musical tastes. I added a XM unit and now have the best of all worlds.
This unit taks about 20 sec to boot which I can live with, the old DDX unit took over a minute.
Online's prices are $200 less for the same unit than the other on-line stores, it is not a re-conditioned unit, free shipping, no sales tax, can't beat the deal.