I ordered a lot of tees from them. The quality was very good... before. Two times, it happened that the printing was not ok, an the two times I sent them a email with picture of the problematic tee, and they sent me an other tee very quickly.
Unfortunatly, the quality of the tees suddenly changed. They stopped using American Apparel, for some crappy tees made in a sweatshop in Honduras... I found that very unethical, and I will now buy my tees somewhere else.