I'm not in the DFW are but looking for potential CFI places to instruct. Called Monarch but I got the impression they felt entitled to tell me "you need us more than we need you" attitude. Even the chief pilot guy was short on the phone and in a hurry. Maybe is a place to get training (domestic) but i'm not so sure it would be that great for working there.
I don't have experience with these guys except a co-worker is getting his CFI with them in September. They sound solid for what he said.
Check them out "thrustflight".