Nice Sound
 

Been looking at E63 cars 4 or 5 yrs old and an M5 was in the parking lot and I thought the sound was great. I've always toyed around with buying an M5 and have a question. The one I saw yesterday with the great exhaust note was new. How far back can you buy and still get the aggressive exhaust. Can I get something as old as 5 years old and still be happy?
Thanks