We have used Belize Diving Adventures for the last several years and they are fantastic. They have a great new boat too. Owned and operated by a husband and wife team, ask for Everette or Enes. www.belizedivingadventures.net
I have used Protech last May and on my latest trip March 9-18. Have been nothing but extremely happy. Great staff and nice small groups. Did a trip to Turneffe this trip with Amigos and to Lighthouse last trip with Ambergris Divers. Both were good as well although the Turneffe trip with Amigos was a big group on a pretty small boat.