I have a 2006 Nightrod. I love my bike. I would like to be able to hear my bike a little better. I'm thinking slip-ons or a slip-on. I do not want to give up performance to get better sound. If 1 was stock pipes and 10 was straight pipes, I think I would like to be somewhere around a 6. My last bike I just bought pipes without any prior information about the sound level and performance, don't want to go through that again. I've read a lot of threads on here but haven't really seen my question answered. Any information greatly appreciated. Thanks.