Top of my list are:
1) Sampled old school beats: beats from producers like Havoc, Rza, Alchemist, Pete Rock, and Primo. I like similar styled beats from cats like Kanye and Just Blaze, but there's something simple and amazing from those older cats that just make hiphop what it is. Primo chops beats the same way Gza raps, with that effortless stop and start that still flows. Anything with vocals and strings does it for me.
2) Beats with 80's style synths. Big fan of movies and I like Tangerine Dream/ Mass Effect type soundtrack, so I'm into those type of Drake chill tracks, as long as they don't go too crazy with the dubstep wobble, crazy buzzing.
2) Dancehall. I am from Trinidad, so that's a given.