I get slight hangovers sometimes but I usually don't drink enough to the point where I will get a bad one. There is a lot of variance in it for me too though.
For example when I'm on vacation I like never get a hangover no matter how much I drink. I could have like 4-5 drinks on a night at home and feel kinda crappy for a few hours when I get up the next day. But if I do the same on vacation, I get up and usually am drinking on the beach by like 10am. It's gotta be the adrenaline that I have knowing I'm on vacation.
Although I do plan a bit better on vacation and always have a lot of water/gatorade and be sure to mix that in more so than I do at home, so I'm sure that has something to do with it too.