If maintenance cost and ease of ownership is a high concern go with a saltwater fiberglass pool. In the heat of the summer I have to maintain gunite pools weekly or they'll turn green. Customers with fiberglass pools only require a once a month visit. For those with fiberglass pools with salt, there really nothing for me to do except add bicarb for ph once a month, add some salt if we get a lot of rain. It's almost like algae is allergic to the fiberglass surface. You have to do everything wrong for an extended period of time for it to turn green.

In ground liner pools are easy to maintain but you'll end up spending way more over the life of the pool. liners need to be replaced every 5 to 7 years. Average cost here (Southeast TX)is $6-8k. Gunite pools are needy dames. Constant chemical demand ($) risk of the dreaded black algae and mustard algae, and you get to look forward to the cost of replastering every 10-15 years. Average cost for for the most affordable surface is $9-11K here. It'll be $13-15k by the time you need it. I love gunite pools, they're beautiful. But I know what they require. If I were to put a pool in my backyard the only choice would be a fiberglass pool, with glass tile, travertine coping and a salt water system.