However, I don't really think you have much control over what your LO prefers.
This. My LO likes his pacifier (I like that). When it falls out of his mouth, he is in a deeper sleep, and he doesn't wake up. I guess I'm just lucky like that.
Also, there has been research that giving a pacifier when they sleep can help reduce SIDS (they think it's because when a baby sucks, they aren't as in a deeper sleep).
Bottom line, I really like pacifiers (and I'm glad my LO does too). If he starts to prefer his hands though, I'm not sure what I'd do....