Fingers or Binkie?

I caught Maegan with her fingers in her mouth like Sammy does. I can't decide what I like better, either fingers or binkie. If I had to choose right now it would be fingers. I hate having to be paranoid about losing a binkie, we always know where her fingers are (they're just gonna be hard to get rid of). What do you think? Should I keep the binkie or let her suck her fingers like Sammy?