I installed an Android v4 (KitKat) head unit in my Corvette nearly three years ago (GS-C0219 / JY-C0227 from Pumpkin - thread here) and remain so pleased with it that I just bought an Android v6 (Marshmallow) model for my 2009 RAV4 (non-JBL). This one (C1067106A3 from "BonRoad") has double the CPU cores, twice the RAM and ROM, higher resolution, custom form factor and plug-and-play installation (took less than 30 minutes total), all for only $287 shipped. Impressive! It arrived within a week with no customs tariff, looks stock, responds quickly, runs all of my apps (Torque is a favorite), has excellent navigation (iGo works offline), offers flexible equalization for much better sound quality out of the stock speakers, and makes my 2009 feel like a 2017. These units are so good that it really is hard to imagine ever going back to a traditional head unit from a mainstream manufacturer.