I too went to a bird fair Saturday, but went to the one in Norcross out of Atlanta. I purchased a HQ bird cage from one of the vendors in January. I purchased a 40x30 dometop and am not happy with the quality of these cages.
I will share what I have noticed about my cage. The paint is very thin. The locks look good, but over the past 3 months the ones on the food cup doors have loosened up from daily use. There are sharp burrs around the welds. If you are seriously considering one of these cages, look carefully at the welds and rub your hands across them. Then look at your hands. It is possible that the sharp edges around the welds will lightly break your skin. If the cage does this to your hands, what will it do to your birds tongue and feet? After purchasing mine, I went back to both vendors there and discussed this. One doesn't care and the other is very nonchalant over it. He said to just chip off the burrs with a pocket knife. I have looked at all the different models on display and they are all built the same.
One of the vendors there used to sell Kings cages. I know because I purchased one from him when I got my macaw 12 years ago. I inquired why he switched brands. He said HQ cages are less expensive and he can sell them faster than a Kings cage even though they are inferior. It's all about the money!!!!
Most major brands of bird cages are made in China. I just purchased a travel cage which folds down for my amazon yesterday while at the bird fair and that too was made in China.
If you would like more information about HQ cages, please PM me. There is much more to say.