As you know, in-ground pools come in three types: vinyl-liner, fiberglass and concrete or gunite. Basically each type of pools will serve the purpose!
Some of the questions you need to ask yourself are: budget, pool size, pool shape, and pool features.
In basic terms vinyl liner pool is the above ground pool designed to be installed in ground. If you have children and/or pets than more likely you don't want to install vinyl line pool due to the
easily damaged liners. Vinyl liner pool can be shaped and sized almost as you want yet with increased
size and custom shape the price for the pool will jump to the level of
fiberglass pool or even concrete pool. Also vinyl liner pool will require more maintenance and repairs in the long run. And last but not least vinyl
liner pool is not insulated pool to keep the water temperature steady.
Fiberglass pools are prefabricated one piece pools that come in many shapes and sizes yet the maximum size of the pool cannot exceed 16 feet due to the freight restrictions.
Fiberglass pools don't require as much maintenance as vinyl liner or concrete due to non-porous surface. One of the benefits of getting fiberglass pool is quick construction time.
Concrete or Gunite pools are the commonly known pools among consumers. Concrete is most expensive option and construction time is extensive.
One of the benefits is there is no limit to the shape and size.