I don't have one favorite, but I like all these pretty equally:

-Electronica that doesn't overly use chromatic builds like crazy (this is really hard to find nowadays) I can make my own tho cause I'm a pretty decent musician hobbyist.

-Alternative hard rock

-Metal, speed metal, heavy metal depending on how it sounds. I don't like screamo/death metal.

-Funk! Oldschool slap happy funk that uses lead BASS guitar and rhythm bass guitar

-Anything that has an awesome groove.