Boat Rentals Grand Cayman?



We were looking for something different to do in Grand Cayman, and we found this great excursion on Grand Cayman Discounts-Boat Rental Excursions

You can rent your own boat, for the day, nice looking boats and its great because there are 6 of us. I figure its a great deal for all of us.

Now my question, for Grand Cayman regulars, we have an option of having the boat on Seven Mile Beach or in the North Sound where we can go to Stingray City and Rum Point and lots of snorkeling spots. Seven mile would be amazing to cruise stop at beaches along the way and snorkel too as I see there are snorkel spots. But I've heard great things about Rum Point and stingray city..any suggestions????