For me it totally depends on the genre I'm reading.
I don't like my fantasy in first person at all. Only on very rare occasions have I liked a fantasy novel in first person (Name of the Wind, and the Eddie Lacrosse novels). I mostly read epic fantasy, so I prefer to experience the world through a very broad scope, and I think it's hard to pull off with a limit first person PoV. Not to mention most fantasy has a large cast of characters. With them all playing important roles, it's nice to experience the story and world through multiple views. I like third person limited for my fantasy. We still get their limited PoV, just not stuck in their head.
With the mystery (especially P.I.s), I prefer first person. I like seeing what's in their head as they deduce and solve and work through things. The world is so much less important in this genre (I mean modern is modern, we all are familiar with it), so there's no need for a broad point of view. These novels tend to follow one person as well.
Far as writing. Same applies. I'm fine with either, but it all depends on what the story and scope require.