exhaust for raptor 350

[yamaha350rider]

I have a 06 raptor 350 and i was wondering what do u guys think the best exhaust is for my raptor. I have a K&N air filter installed

[Bigun55]

My cousin has a HMF on it. It gave it good power and it sounds EXTREMELY good. Its got a good deep sound to it. It aint to loud and aint to quiet.