'Tried twice and left in disgust.' I'm afraid that's where you went wrong, Onesleep. You have to persevere with the Maxx to get the good stuff. I work close by so can get in at least once a week. I agree that, when it's bad, it's awful but, on a good day, there's nothing quite like it!
I've always assumed that the stuff is sub standard but I shall be gutted if they're up to anything dodgy.