I debated the race versus sport for a long while since I also have kids, typically take clients in the car and decided on the race. It is louder but not obnoxious and I think I would have wanted a little more sound than the sport has to offer, but I am also certain you probably can not make a bad decision between the 2 of them.
2009 ///M3 Sedan - Jet Black / Fox Red - IND/ESS VT2-600 - Eisenmann Race - Brembo
2007 Corvette Z06 - Atomic Orange / Ebony
2011 F-150 SuperCrew (Winter Transportation)
1986 Buick Grand National (10.8 @ 122mph)
1987 Buick Grand National (stock...for now)