I know this is been asked but no one really gave a real answer. Please post down your favourite you have used or currently using! and see which brand is chosen more!

i have a pioneer avic serie, may be not the best but for the price you cant go wrong with that....they now have X series

Any of the new Kenwood Units...they are all really nice and use Garmin Nav which is a plus compared to some other headunit companies that use their own nav system which is usually sub-par compared to a Garmin-based navigation system. Just my .02

Adam

garmin navs ftw, like titaztik said any new kenwood unit. i love mine i use a kenwood dnx 9140 its great has everything i need.. if your willing to put down money for it then id go with the 9140 if not go a step down.

i like the JVC arsenal Kw-NT1 it has almost everything, plus the navi layout is smooth and easy to read..