I am considering buying a BMW as my next car, but can’t decide among these models, 320i (Luxury Line), 320d (Modern Line) and 520d.Will like to try a diesel car, but the 320d Modern Line does not comes with GPS which is highly desirable. If I buy the 520d which has the GPS, is it justifiable for an additional of more than 60K RM?Look forward to all your recommendations.