I was going to go to Godspeed, but I can't this year due to work commitments. Pity really, it'll be the first I've missed since 2002.
I frequent most of the other large events, and have done so for a few years. I really like the smaller ones though - Fantasia's, especially. As for my taste in that area of music, I find happy hard is great for when you want to be happy, especially if you forget about being serious and look past the cheesyness of most of it. Hard trance is a favourite also. I don't care all that much what the genre of music is (I listen to everything from classical to rock), as long as it sounds good to me.