I got my basic and advanced with Diver's Paradise in Webster. They're one of the least expensive places in town, and when I did it they were one of three places that you could take it and get PE credit at UH. I think the owner is an PITA, but the two instructors that I did both my classes with were awesome. They're been best friends for years, so they bring a fun chemistry to the class, and they were the best teachers for scuba I've had.
I got my nitox cert through Oceanic Ventures Inc.
Nice people, and they know their stuff, but they're mainly catering to the tech-diving crowd, and one of the more expensive places to get your basic certs.
I got my rescue diver cert through Gigglin Marlin Divers. They were about standard on their rates. They're a friendly group, and seem to know their stuff.
Let them know I sent you. I haven't dove with any of them in quite awhile, but I like to let them know I'm thinking of them.
B
Divers Paradise, Inc.
20801 Gulf Freeway Suite #10
Webster, TX 77598
281-332-9982
http://www.dpscuba.com
(Ask for Rob Verwers, or Loretta Shields)
Gigglin Marlin Divers
2211 Richmond Avenue
Houston, TX 77098
(713) 521-1859
http://www.gigglinmarlin.com/
(Ask for Martin Pollizotto)
Oceanic Ventures
2715 Bissonnet Street Suite 302
Houston, TX 77005
(713) 523-3483
http://www.oceanicventures.com
(Ask for Ann Keibler)