I've been with Groton Auto Body and Sales Company for almost 10 years, and have used their services more than a dozen times!
They do phenomenal auto-body work; I can't even see where was the dent in my car! Also, their estimates always end up being the same price at the end. They are fairly priced and the cars are always ready on time.
I wouldn't go to anybody else - they are local and they make their customers happy!