This is how I tend to see it, though it's possible I'm completely operating on bias as far as the severity of hangover stuff. Usually if I hydrate well, I avoid bad hangovers. If I don't, I get bad hangovers. How much of a role the quality of it plays I can't really say much on beyond my anecdotal belief that it might be better with good liquor. My last trip the bar was a Corona every hour for the first three hours, which is my general casual gotta drive home pace, then 6 shots of Tullamadoo as my buddy calls it in a matter of 30 minutes, more commonly known as Tullamore Dew. Call my wife to come and get me. It gets scary when everyone feels the need to buy a round. The beers also start going down a lot quicker during this shot frenzy, of course.