I never thought I would purchase a BMW. While delivering some documents to the dealer, the owner of the dealership took me out for a test drive during a heavy downpour. The X3 handled like a champ! It performed like a sports car ... it feels like one.
Although it is advertised that the X3 is an inch shorter than the X5, the X3 could use a bit more space in the front (for the driver and passenger) and storage in the back.