I personally like Largo, however, I agree that you’ll find good operators at both sites. Choose an op based on how they cater to divers: ie. do you mind larger boats (if not, Rainbow Reef is good, or Ocean Divers); if you prefer six-packs where you have a better chance of choosing the sites, look into Silent World, or Quiescence. Both are great. Quiescence has 3 six-pack boats and are very good about diving based on your experience/comfort level. SilentWorld’s boats accommodate up to 14.