I'm getting in on this string a little late it appears, but since the search function is used a lot to find topics I figure I'd add my $.02.
I'm getting my OW in September and my wife and I spent the last month trying to sort through the San Antonio LDS's to see how pricing differed as well as personal interaction. Without having done much more than that, I'll pass along our findings (which may be premature) - but keep in mind we spent about an hour at each facility:
Dive Masters - while conveniently located to us, it was like pulling teeth to get the guy behind the counter to talk to us. Perhaps just a bad day (and I think it was the owner), but all my questions about gear, courses, etc. appeared to be received as an imposition as responded to with minimal info. We were the only ones in the shop at the time, and once a customer came in with an empty tank we were walked away from mid-sentence to tend to the 'established' customer.
Dive World (2 locations in San Antonio) - My wife and I likened this experience to being on a used car lot. High pressure sales tactics throwing numbers at you very quickly and then trying to close the deal. Very personable, but we found ourselves telling them bluntly we weren't spending a dime until we researched all the LDS's in town. Prices seemed to be on average with everyone else, but if you tried to enter the OW with your own gear they seemed to have a price offset that still brought the bottome line to the same figure.
Deep Blue - We booked with these guys. I've not met Trey (the owner) yet, but the experience from the time I entered the shop to present still continues to be great. Flat rate for the OW course, and no pressure to buy everything in the shop. They have as much inventory as the other shops and will give you scoop on current deals with insight on what you would really need vs. what you may want in the future. As previously mentioned, they keep their customers updated with e-mail traffic on upcoming events and meet at Joe's Crab Shack for regualr meetings.
Wish I had thought of searching Universal City for a dive shop - I always forget about our burbs - and tend to think of UC as a small extension of Randolph AFB.
Hope this helps the next would-be diver.
CharlieSierra