ok, the Parrot sounds WAY better than the stock unit using stock amp and speakers. Good dynamic range, good adjustabilty, imaging is so-so but that is compromised by speaker placements.
Is it as good as my Klipsch home theater? Not even close, but for an open roadster I am happy with it. I was never a fan of Alpines but the Kenwood I like. Really depends on what your objectives are. For pure sonic fidelity perhaps the Kenwood. If you want to mess around with tweaking and hoping for better Android apps, Parrot.