Rowan Watersports vs. Captain Marvin's?

Hello,

My family and I will be in Grand Cayman in March (on the Carnival Liberty), and really want to see Stingray City, the Turtle Farm and Hell! We're trying to decide between Rowan Watersport's and Captain Marvin's...

Rowan Watersport's will be about $20 cheaper and has great/recent reviews on TripAdvisor, but I can only find some older, not so great, reviews on Cruise Critic from 2011. Has anyone taken their Stingray City, Coral Garden and Island Tour recently?

Thanks for your help!

I've been out many times with Captain Marvin's, always with a great time. They have been known to customize a tour with a large enough group; bear in mind, his boats carry around 12-15 people. To be fair, I've never heard of the other group...

For the Turtle Farm and Hell, West Bay Loop offers bicycle rentals by the hour and will do pick up/drop off at the terminal. The Turtle Farm is actually walking distance from their shop.