After reading numerous threads, exhaust at this point is a waste of money so I've decided to use the money to get some downpipes instead and then change the exhaust if I don't like the sound. Sorry folks. At the moment, I am going to keep the exhaust!
Current: 1987 E30 325is, 1997 E36 M3, 2015 F80 M3
Past: 2011 E92 M3, 2011 E92 335is, 2008 E90 M3, 2007 E92 335i, 1995 E36 M3