Stingray City, Snorkeling, & Starfish Beach?

[teacherme]

We are thinking about going on this excursion, https://www.tripadvisor.com/AttractionProductReview-g147366-d14104661-Private_Half_Day_Stingray_City_Snorkeling_and_Starfish_Beach_Tour-George_Town_Gran.html. Has anyone used this company?  Good or bad!!! 
If not does anyone have a recommendation for a tour to Stingray City, Starfish Beach, and Snorkeling?   

[roysue]

Sorry, we have done that tour with Captain Marvin's but not with the company you have chosen.