· track hack
M4's sound good.here's a nice 1000. N2UF from SV1000Portal
I started with stainless Yoshi RS3 ovals - pretty good but not anything special - kinda heavy too.
I replaced those with Carbon Fiber Leo Vince's and they were awesome - much lower rumble, less "tinny" than the Yoshi's, plus they come with the silencer that you can keep in or remove for a louder sound. I'd highly recommend them.