After doing a lot of research that included internet and AG pool books the bottom line came down to a hybrid pool. In terms of cost, durability and warranty the overwhelming advice was a steel/resin hybrid pool.

We ended up with an Artesian Echo Canyon that came with a lifetime non-prorated warranty. The bottom boots, bottom rail and top seat clamps are all resin. The rest of the pool is steel. Anything that could be exposed to corruption from the soil is resin. All I can say is it's a very sturdy, quality pool.

What you will find is that each type of material has it's pros and cons.

Aluminum does not rust but is more flexible and prone to corrosion over time. It also costs more than a steel pool.

Resin appeared to be an untested product without many years of real world pool trials. I've seen what the hot Texas sun can do to car interiors and other types of resin (plastic) over time.

For me the steel/resin seemed to make the most sense for the sake of durability and cost.