I've done 11 years of Airbus training in CLT. I did one recurrent in DFW last year. There are + and - to both, and I much prefer CLT to DFW, and not because I live local. IMO, CLT has a more relaxed atmosphere than DFW, but CLT has less ancillary resources (cafeteria/on site food options / quality of hotels nearby with food/entertainment options). I'm not saying that the quality of training is any different from one to the other, but I just prefer CLT. Most of the other pilots you'll see in CLT are regional guys and gate agents doing training. There's 4 (has the 5th one been built yet?) Airbus sims there now, so a much smaller physical footprint - nowhere near like the maze that is THE SCHOOLHOUSE.

I'll echo what others have said, if you can drive to either, pick that one. Request the one that has the easier commute for you if you need to fly in.