I'm not from Atlanta, but I can offer some advice.

The key is finding someone with the right attitude AND understands the necessity for DYNAMIC balancing. This means putting weights on two planes.

If you find someone who is familiar with using tape weights, just behind the spokes for the outer plane, then you have probably found someone who knows what they're doing.

This job requires about 25% knowledge and about 75% attitude for doing a careful and thorough job. It's not rocket science, it just requires the desire to do a good job.

If one of these tire store jocks tries to tell you that you only need balance weights on the inside of the wheel, find someone else. If you only use weights on the inboard lip for a static balance, you will almost certainly have vibration on an MB with its nimble suspension.

Good luck,