I figure that we are saving about 30 to 40k doing this by hiring the subs ourself. All the subs are the same ones used by the PBs here in Phoenix. For example, the plumber does 100% of California Pools and 50% of Presidential Pools here in Phoenix. Our mason does most of Presidential Pools. We have been very lucky in the subs we used so far as they have been very helpful and knowledgeable. Some of the subs I used are from Gumby who also went the DIY route here in Phoenix or recommended by our pool designer. Most important though, check your subs with your state's board of contractor, not the BBB, for any complaints.
Can't help but mention that if any one builts a pool here in Phoenix, ask your PB to use Bill Duncan for plumbing. He was been doing this for over 30 years and I would not have noticed a few things without his expertise. For example, he put in an aerator to run at night to keep the pool cooler in the desert. Designer had called for the main drain to be connected to the skimmer but Bill plumbed it seperately.
Also a shout out to Jon at Titan Gas, he went above and beyond for us at a cheaper price than the bigger gas companies.
Can't help you with the subs since you are in El Paso, but I talked to people in the business. I used most of the subs recommended by our pool designer but I got the gas guy from the electric guy, the mason guy from the rock slide guy. They all know each other and know who does a good job.