This is the place to go. I worked for them down in Walnut Creek, CA (bay area) years ago, and took a lot of pride in the work that was done in the shop. They have very high standards, and won't allow sub-par work to be done in their shop. I've been out of the auto-body industry for about 10 years now, but I've used them here in Sacramento before to work on my personal vehicle because I know how high their standards are and what the quality of their work is like. I have seen enough shoddy auto body work in my time to know that I would never want sub-par work done on my own vehicle. That's why Cook's is the only place I will ever recommend to anyone wanting a quality paint job/collision repair.
They are certified repair facilities for Mercedes, and several other high end auto manufacturers.. all their work is done to extremely high standards