One thing you need to be aware of....most pool builders don't have a clue about pool maintenace or water chemistry. Ben has even made this comment on one of his posts and I have seen for myself the results of people following PBs advice on pool care when they come in to me with their first water test!
I can't begin to tell you the number of SWGs that have been started up and run with NO CYA at all in the water (and the owners NEVER being told about the importance of monitoring the pH!) and the number of pools with pH off the scales in both directions because people were following PBs adivce! They want to sell you the equipment that will produce the biggest profit margin for them.