How to choose a Granite (http://tanbrown.org) fabricator

Yeah, I know, check references... but references from a fabricator will of course represent their best work and (http://maplered.com) references from friends don't always pan out.

So:

Can anyone offer 3 questions that I can ask our 2 finalists that will help us make the selection? Here is what I was thinking--

a) seam placement/seam construction (epoxy or silicone?)
b) template-- actual plywood or just measurements
c) fabrication equipment (computerized vs. "by hand (http://maplered.com) ")

Also, how can I be sure that we're getting the best quality Material (http://g654.org) ? I've read that there are different grades of Granite (http://tanbrown.org) (first quality, stand (http://maplered.com) ard, commercial, etc.).

Thank you.
Deb