I've had Fuel Exhausts on both my road bikes (SV650 & R6) and been really pleased with them.
They have a removable baffle, UK (Cumbria) made and the small company are really friendly.

I've had lots of compliments on the sound (unless people are just being nice cos they like the look of my Ar6e)

http://www.fuelexhausts.com

I've got a new carbon Akrapovic can that I could fit, but the Fuel sounds deeper / nicer.

Oh.. and they are cheap too

Enjoy shopping !
G