$800 for an OW course seems a bit steep for San Antonio. My wife and I did our open water course as part of a group with John Duggan, Duggan Diving in Universal City, near Randolph AFB. We were extremely pleased with John and his operation. You will be hard pressed to find someone with John's experience and knowledge and his instructors are very good as well. John uses the pool at Ft. Sam Houston for the pool sessions. If you are in the military, you can set up the course with John through the MWR facilities at a discount. Personally, we did not use a private lesson scenario, and I think we gained a lot from watching the other students go through their drills at the same time. We found that you can learn a lot from other's mistakes as well as thier good techniques. Dive World also offers a good program. They have two locations, one on West Ave near I10 and the other on Thousand Oaks, near Henderson Pass. Each Dive World location has its own pool, which is a little deeper than Ft. Sam, but are pretty small, especially if you have a group of divers in the water. I have not taken any courses from Dive World, but they seem very nice and are also professional.