Build Quality: Tie
Display Quality (Colour Richness): Honda
Display Quality (Brightness/Contrast): Rockmars
Audio Quality: Tie
Touch Sensitivity: Tie
Bluetooth/Mic/Remote Reception: Tie
Graphical User Interface: Honda
Warranty (Years): Honda
Resale: If interested in Honda Sat Nav then get it as an option during booking (55k) otherwise if you pay 85k for a later installation in a delivered vehicle, nobody is going to give you more than 25k in resale. So its absolutely foolish to invest 85k in a unit worth 26k. Think!
Bottom Line: If you can afford, get the Honda Sat Nav unit as option during booking. For everyone else, Rockmars is equally good. Period!