I rarely drink mixed drinks and shots unless it's a special occasion. For me I stick with a light beer, usually Coors Light. I like to be able to socialize all night with a bit of a buzz, without getting really drunk. I know for myself mixed drinks and shots tend to creep up on me later in the night.
On special occasions I do enjoy martinis though. If I'm not really feeling the energy I'll take a Red Bull and Vodka. If I'm limited on funds, I'll start the night with a 151 shot and then maybe 2 or 3 beers the rest of the night and I'm straight. But besides beer I love a good Sangria. I have a pitcher of home made sangria sitting in my fridge at this moment. It's one of those rare drinks that you savor.