I can't decide which one I have to go for... attracted to A8 for its 4WD, but hate the GPS system, BMW for its used car value and populartiy, MBZ for MBZ it is....Maserati for its design outside & inside... Which one should I choose.. I know it's a stupid question to ask but.. pls somebody be my help..

As you mentioned 4WD one can't go far wrong with a Subaru. When it comes down to a car actually being useful a pick between Impreza, Legacy and Forester is a good bang for the buck, no pun..

Over here the WV Golf has the best second hand value but I haven't seen a used one for sale in a long time.

Look up the resale values of each then rank them in order for style then average it out to the one that fits for you. Also the new Lexus LS is pretty hot

BMW 750Li is your best choice. It has a very fair price and considering free maintenance it's a no brainer.