I don't really like the sound of Auto-Tune. I don't like when it's extremely audible, when you're able to detect it easily. I don't like that.
Keep in mind, you can use Auto-Tune and you can know how to work it perfectly, but you still have to know how to write a good song.
It took me five years to realize what I could do with my voice. No Auto-Tune - cut all that off.