Okay, I know you guys might be getting annoyed, I want to get a Leo vince, but I don't think they will sound good or be loud enough for me. I want an exhaust that sounds good. I know that my friend has a yz250f with an older big gun system and it sounds awsome. It is pretty loud but I do like it. I have a 450. Any suggestions. I have to get a slip on since i dont have that much money and i just bought a stock header. M4? FMF? Leo Vince? Pro Circuit? White Bros? yoshi?? I have to be under 350.......I want a pipe that gains everywhere concentrated on 2000-9000 rpms..........Any suggestions?? I just dont want to invest $350 in something i'm not happy with. The Leo's do look amazing but I dont know what to get.