Hi, just to add my two cents.

I find that it's true that I get drunker sooner, but not THAT much. I always stick to low-carb beverages. I drink wine, vodka with no mixer, and occasionally I will drink beer if there's nothing else, but no sweet mixed drinks. I haven't found the headaches to be worse, in fact I find that I have LESS hangovers now. I think it has to do with the fact that I don't have low blood sugar when I wake up in the morning like I used to... and I ALWAYS drink tons of water while I'm drinking AND before bed.