I use Great Lakes Media Technology in Mequon, WI (just north of Milwaukee). They deliver high quality results over and over.
You may want to inquire about offset disc printing (versus screen printing) for better image quality on the disc.
My rep is Julie Knotek.
I don't like Discmakers. I've had colors that look way off base a couple of times. I think they go directly from the electronic artwork file to printing directly on the discs (no films).