I like my Fabspeed's!! Wouldn't go anywhere else. Sound is awesome, especially with a PSE.
They might throw you some free shipping. They did for me. While your at it, order a BMC air filter from them. Adds better flow and a little hp.
I have a video on youtube if you want to hear.
http://www.youtube.com/watch?v=PaEOcosW8Eg