I had a paramount in-floor system put in my gunnite pool when it was built. I don't regret it for a second, but if the company is claiming it will save you money, they're spreading it out over a long time. I think Paramount makes some of the best in-floor systems. but we did it for convenience rather than savings

When we moved to AZ, we rented a house with an IG pool for a year before buying so we could decide if we wanted a pool. Our rental had a suction side cleaner which worked well with limitations, but we grew tired of hauling it in and out of the pool and more often that not we just left it in all the time and swam around it. We heard horror stories about in-floor cleaning. Most of the complaints care from people whose system had complicated heads with lots of moving parts. They would invariably get some piece of debris caught in the mechanism and jam the head. Our landlord bought a house with a Paddock pool with in-floor cleaning (same parent company as Paramount.) After the 1st few weeks of listening to his "issues", all of his complaints turned to praise as he started maintaining the pool properly.

When we went to have our pool built we decided we wanted in-floor cleaning. After doing some research, we decided on the Paramount PV-3 system because the heads are so simple. No springs, no ratchets, virtually nothing to go wrong and a lifetime guarantee on the heads to boot!

After 2 years, we don't regret out choice for a minute, but it wasn't about saving money, it was about walking out and having a sparkling clean pool each and every time with no hose , cords or other junk. So far it has worked out great.

A pool with a properly designed in-floor system is far more involved than a standard pool, I chose a builder with a lot of experience with the system I was using and he still had Paramount do a good piece of the design work on our pool.

I'd imagine a fiberglass pool installer would only have to get a good design once for each of the models they sell.

There are some downsides to running in-floor cleaning. It generally requires an oversized pump. Plumbing in Solar can be a lot more troublesome if you don't plan for it ahead of time.

My advice, if you do go for in-floor. 1) you still want regular returns (maybe deep returns of you want to do solar.) 2) you still want a dedicated vacuum port. 3) You may want to consider a second pump to run the in-floor. 4) Take a look at the diagrams on powermat.com for systems with Solar and in-floor. Even if you don't plan to do solar, you never know when you might want to in the future.