Local when I can..
I try and support my local shop when I can. That being said when it'd time critical or an odd part (both of my GG's are over 10 years old) I call Lewisport in CA. They have have always been quick and very helpful.
"Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles ..."
-Hunter S. Thompson