I have dove all three quarries - Blanche, American, and Norman. American is a mud-hole in my opinion. If you like doing dark minimal viz dives, then it is your place. I haven't seen much there, because I don't like diving it.
Blanche is my favorite. During the week, there is very little use of the place - in 2 years, I've only seen divers there twice (again during the work week). Lots to see and do - lots of submerged items (boats, cars, plane, bus, large cylinders, etc, etc, etc.
Norman is nice also. It has quite a bit of the same type of items, but is further for me to drive. I have been there and "played" a bit there when I go camping out that way.