I'm a resident at UT Houston peds. Very DO friendly (COMLEX alone is fine). You have a great exposure to both unique and bread and butter cases with high volume. Very nice attendings and residents, lots of fellowships if you're interested in subspecializing. We cover 3 hospitals (Children's Memorial Hermann, MD Anderson, and LBJ General Hospital). I would highly recommend applying. We take 22 categorical Peds, 3 Pedi Neuro, and 4 Med-Peds interns a year.
I interviewed at UTMB - since Hurricane Ike, their program has shrunken a lot and is not as strong as it used to be. I got a bad feeling from the residents and attendings there. Obviously, it's better to see things for yourself, but that's just my 2 cents.