While I like a variety of games, I play casual ones more often. However, that doesn't mean I like games that hold my hand. I like challenges and prefer having a difficult time on an obstacle and finally figuring it out far more than messing up a few times and the game skipping me past it and giving me a pat on the back as if I did anything.
When playing puzzle game apps, I refuse to use power ups because I think it's cheap, even if it's a free power up. I only end up using them by accident.