What I have learned over time is the internet, including this site and my posts of course, are all very subjective. It is interesting to read. I think in houston NEVER go with the first person you talk to unless you talk to THREE people. Dr. Barrera should be on that list. But you can make your own list. Bosley has a bad rep here(because you really dont know what doc your going to get) but if you can talk to dr feldmen in Houston himself it is a good idea, but not the reps.
Also, watch out for any doctor that talks down or bad about other doctors. I see it as a sign of un professional behavior and desperation possibly.
What about multiple offices but one doc? I am not sure but i wonder why a busy doc would have several sites unless they are not busy in one. Again, just an opinion but things to consider.
This site is helpful but it does simply select for the most vocal patients rather then anything else. With that said, it is important you get several opinions if you can from the actual doctors(again not the sales reps). If you want to get technical, you can google the texas medical board, look up the doc and see what his ACTUAL specialty is. Most have multiple so you want the combination that fits the best.
Make a list and talk to the docs. As they mentioned above, do not go just by the opinions of one or 2 posts, use the list, make your own list. be as objective as possible.