i got a flat black atty in a pif a couple of weeks ago, but since i had three other atties, i just put it in my box as a backup. last night, i was too tired to clean my other atties so i pulled this one out. holy carp! huge vapor clouds and killer flavor! doing comparison tests between all my other atties using the same cart and batt confirmed this atty is something special...or my other three atties are the same grade of crap. so is there any way to tell?