2009 900 Custom want to add exhaust that will sound deeper than stock but not too loud. Soundclips of HK Res-techs and V&H Slashcut Staggereds sound the best to me. Have read of some problems with chrome & cracking on HK's big straights. Feedback on the two exhausts along with any suggestions for other exhausts that would meet my criteria would be greatly appreciated. Plan to add Kuryakyn Hypercharger & Cobra Fi2000r at same time.