C’mom Molydenum surely you know the answer to that one.
Most misinformed persons will try to claim that the answer to your question lies in the amount you are drinking and that you are obviously partaking more of one brand than the other.
Well I don’t subscribe to that theory. The amount of booze that you put away at any one time doesn’t count. You can (well at least I can) drink as much as you like, right up to the point of resembling a rubber man, and not have a headache. It is only when you wake up that the headache appears.
Ergo. = Drink doesn’t cause headaches, its sleep that causes headaches.
Cure = Don't go to sleep.