LOL - there are different one's for every need and I visit quite a variety. I used to work at Aquarium World, however, so I always have some bias there.
I also go to Global Fish and Pets and City Pets (the only place I have found with $5 frags). Village tropical is good, sometimes visit Fish Ranch. Never been to Planet fish but will some day. Sometimes stop in to Aquatic World. We have NOOOOO shortage of LFS.
Are you familiar with the local reef club (if you are in Houston too?)... MARSH?