Just saw this thread - did you choose one yet? I live in Dallas (in the city) and was looking in March - here's my experience:
1. If you are in the city (Swiss Ave, someone said? - that's about 10 mi from me), I found that the pool builders are all a bit pricier, as they are established companies, and don't have to be as competitive as PB's in new-build areas (e.g. Plano, Frisco, etc.).
2. Calling the PB's even in Plano (about 10 mi away) resulted in being stood up (happened three times) - I think they just don't want to make the drive every day - themselves and their crews - they have enough work in their towns.
3. There was a huge disparity in quotes from PB's - truly amazing. I knew what I wanted (simple rectangular pool, no spa, in a flat lot), so most were able to give me ballpark estimates over the phone.
We went with Waterline Pools in Dallas - he was recommended by a realtor neighbor, and he's built several pools for her personally. We're about 3/4 done now, and they have been great. The only hiccup has been the rainy weather - the dig caved in twice, despite their efforts to cover with plastic. Finally had to shotcrete the hole itself. I shared in some of the cost overrun, but he was very reasonable about it. We started April 12, as I recall, and are ready for plaster now, despite the weather, so we've pretty much stayed on track. Waterline's price was also 25-50% less than other bids, and the specs and quality are apparently above average (e.g. Jandy equipment, 8" walls, 1/2" rebar, 6 bar beam, etc.).