For the thread data, I have traded emails with Marine Life Divers in Negril and they seem pretty on-the-ball and want the business. I also traded a few emails with Negril Adventure Diving and they were kinda...meh.
if anybody else has expereince(s) holler, I will post a follow-up review. Thanks!
By doing a little snooping, looks like your hotel and the dive shop are south of Seven Mile Beach (most of our dives have been offshore, between town and our hotel). I will be very interested in the location of your dive sites, and how they compare to what we have experienced.
Enjoy!