The AC in terminal A in MIA is actually a better lounge than the BA Terraces (which is definitely the worst Terraces in the world, which I can now say as I have finally visited all of the Terraces branded lounges). So the lounge situation in MIA is greatly improved in the past year (with the opening of the new ACs inside security in D and A). Also MIA has quite good coffee inside the ACs, and the bars are stocked with Galliano and Campari (unlike some other ACs).