Best gym I ever trained in/at was Lee Haney's World Class Fitness Center and Animal Kingdom when I was in Atlanta. It was in the basement of City Hall on Ponce. That gym had any kind of equipment you could imagine and many pieces that you couldn't. It closed two years before I finished university. And I spent the next two years going to :
Main Event Fitness in Marietta (the second one that Sting and Luger opened with a lot of old WCW talent there - WCW had closed at this point).
Ropeman's - Ty Felder - who purchased the original Main Event Fitness on Buford Highway.
Coffee's Gym in Marietta on the occasional weekend.
I dated a girl that lived in Alpharetta for a bit and we would go to World Gym and Powerhouse out by her sometimes. (Where the old B list WCW wrestlers hung out after getting fired before it closed. It was like the unofficial unemployment office for cast off wrestlers - Robbie Rage - he was a trainer there and a bad dopehead, Glacier, David Flair, Armstrongs, etc.)
Went with friends sometimes to Run and Shoot in Atlanta. And yes, it was exactly what you think it is just from reading the name and location. Atlanta. Run. Shoot. It was a ghetto location that had about a dozen indoor basketball courts and a weight room. I never saw another cracka in there besides me.
Moved to Florida and joined World Gym / Titan for a few years. Ownership changed and everyone left.
Went to Golds Gym on Commercial for a few years and then they changed out all their Hammer Strength and Flex machines for the Hoist crap. Everyone left. It was a ghost town.
Went to LA Fitness and this is the longest I have been with any gym.