Crap, mis-voted. I voted the range in which I'll get my hangover, not how much I can drink without getting a hangover. I do notice a hangover quickly. If I drink as much as 3 drinks in a night, I'll feel different (worse) next morning. Mosly a subtle, overall feeling of lameness, probably also caused by the lack of sleep.
Then there's the border where I start having headache and slight nausia, which is around 6-8 alcoholic consumptions on a good day, when there are no limiting circumstances (tireness, lack of food, illness).
After that, I'll usually feel hungover for *exactly* half a day. Why half a day? Food. I eat warm food around 12:30 pm, so after that, the hangover usually decides to go away.
Obviously, we can go beyond this. And I have. If I drink too much (around 15+ drinks), I'd nearly die the upcoming day. That said, I have had nights where I would drink 20+ drinks without intteruption (starting pretty early, at around 6PM, stopping at around 3AM), and feeling FINE the day after. Not sure what causes that.