which exhaust??

[bone705]

I have a 300 with an old dg exhaust. im looking to get a new one that give the best overall power. I mostly ride trails. My motor has a the racing cam from web, hi-comp piston, and K&N. which one of these should i get:HMF, DMC, yoshi, or curtis sparks?

[Diedrich]

1. DMC
2. HMF
3. Curtis Sparks
4.Yoshi