Final Launch vs. Beta Launch: Pros and Cons

Hi, I'm about to launch my project and am wondering if it's a good idea to launch beta versions while they're still in open testing on Google Play and the App Store. The app is fully functional; we're still making some fixes, but I feel it's good to go and ready to be shown to the world. How do you approach this? I've seen some projects launched in beta, but I'd love to hear from those of you who have experienced both a "matured launch" and a "beta launch" and could share some pros and cons. Thanks!