Real answer- there are old threads on the Real Estate Board and Aggieland board. Or just ask there. Most people there aren't ass hats.
It will also depend on your price range, if you want a fully customized home, or a builder home with some customizable aspects.
There have been quite a few UBH homes being built near me, as well as Tilson. A friend is currently using Happy Homes. Keys & Walsh are supposed to be really good, if you can afford them.