snorkelling off sosua beach

afternoon all.. last year i pretty much just paddled out a few hundred yards to the coral formations about halfway down the beach in front of where the catamarans are moored. want to go further afield this time and am wondering what's the best way to go about it? I know there's plenty of boats touting to take groups out, but is it best to book with one of the shopfront dive centres and pay that little bit more?.... that said, what's the going rate for a couple of hours snorkel (not scuba) trip anyway?

went to paradise island last year... not too impressed with being herded like cattle with all the other (far too many imho) trippers; people bumping into each other, trying to go one way and being dragged back by the ankle... that sort of thing. by further afield I meant a launch from sosua beach.