Although a newbie and still haven't even attempted my first pizza since joining, I have received so much great advice I thought I would try and share what little I can.
Whole Spice out of CA has the freshest, highest quality, most pungent and flavorful herbs/spices I have yet found, organics too. No minimum quantities, and the last time I ordered, shipping was free on orders over $50. They are a bit pricey on the smallest quantities, but their prices really drop on the mid and large sizes. I partnered up with my Italian Mom last time so as to order in bulk, and even she was impressed, which is saying something.
Can't insert links yet, but they are at wholespice dot com.
You can read all about them on their site.