Stolichnaya and Svedka are my two favorite vodkas to drink straight, though I've gotten not as good at doing so over the years. Citrus vodka is wonderful. In fact, I have some in my freezer right now and am unsure as to why I haven't been drinking it more lately!
What is Galliano Sambuca? I apparently haven't had it...
And yeah, Llama, I can't stand Colas. They make me feel sick... If I were dehydrated and had no other choice, I'd have to let my veins shrivel because I am so adverse to it. And the fact that I can't really consume caffeine anyway doesn't make me want to try to like them any more, either.