First of all, Welcome to the board! A wealth of information and opinions here. You are the final decision maker for how and where you dive.
I agree with Jim. Ben's operation is very new, but only as a dive op. Ben has plenty of experience and treats customers as he himself would want to be treated. Most people want to dive with all the well established shops and are hesitant to try a new operator. Nothing wrong with that, however, sometimes the best isn't always the well established operators.
I've known Ben since he was instructor at the other well known and established shop. Ben was also my instructor three years ago, and it took some doing to track him down last August, to train my son. He will always get my business for everything.
Yeah, he's my friend, but if he wasn't an excellent instructor, diver and now owner, he wouldn't be getting my business. He runs a tight operation and fast boats. I've already scheduled my whale shark snorkeling trip with him for my family, 6 of us, plus my son & daughter for certifications, my Coz & cenote trips.
My advice is to give him a try. If you don't find him to be a top-notch dive shop, then try a different one. But I can guarantee that you will be treated very well and will not be taken to the dead zone (Chitales Reef, where most of the major Ops will drop you) or any other less than optimal sites.
My $.02
Jack