Hi Fellow Marietta resident,
I've been researching the same thing as I will need paint in a few years once I finally get mine running as properly. Bud's has been highly recommended for all types of work and has the reputation as Mercedes specialists.
However, there are smaller shops (like around fairground st, off cobb pkwy too) who specialize in things like chrome, powder coating etc. I've not found a paint shop yet but those can be cheaper, but you would have to project manage it yourself.