My friend is in need for an advise on which model to buy. We've found 2 car 525 and 528 year 2001 (double vanos) with the same price. Which model will be the best bet.Feel the 525 is a bit more responsive at lower end as compared to the 528. Both condition about the same. He doesn't mind about the road tax difference and resale value. The choice is more towards the driving feeling and maintenance.Advise please