ACME Glass and Windows does 3M. I have no idea how good they are though. A good rule of thumb: if you find a place that does Huper Optik or V-Kool, they'll most likely be very good.
You guys might wanna consider it. It's more expensive, but rejects a LOT more heat than regular tint like 3M. Since you're in Dallas, I imagine it gets hotter over there than here in SoCal. On my car, with a black interior, a few hours in temps close to 100, the air inside my car was just warm and quickly went away once the door was opened. Bare skin could touch the seats since they were just warm and never really that uncomfortable.