My wife and I were certified at Southern Skin Divers Supply and I agree, they are definitely top notch. We get our gear serviced there and will continue to do so even though we live in Atlanta now. We travel back to Birmingham often as my wife's family is there so it is still convenient for us.
I can also tell you they go the extra mile for their customers. We stopped in to practice our skills at the pool recently because we had a trip to Grand Cayman planned and it had been over 6 months since we dived. We asked about getting my wife's mask fitted with prescription lenses so she doesn't have to wear contacts for diving. Forrest told us it usually takes about 10-14 days to get it done, and we were leaving in 2 weeks so we figured it might be too close to get it done and get the mask shipped to us in Atlanta. He said to leave it anyways, he'd get it done. Forrest came in on a day they were closed because we had to get my wife's glasses prescription and fax it in. He got it ordered that day, and the lenses came in the next Tuesday. Forrest got them installed tested and in the mail to us that day so we were able to receive the mask with time to spare. My wife loves having the prescription mask now and it definitely improved our trip not having to worry about that extra detail.