I did some side by side comparisons and came up with these 2. Everything else was basically more $$$, fluff and not needed. Honestly I think I' am leaning more towards the single din now. The only differance I see is the preamp voltage which favors the Single din.
http://www.crutchfield.com/p_105KDAH...T.html?tp=5684
http://www.crutchfield.com/p_105KWHR...84#details-tab