Has anyone out there installed an Ultramayd liner? It is supposed to last up to 50% longer than Plastimayd's other liners. Also, anyone know which Plastimayd liner hides seams the best? I am in Arizona and am putting in a vinyl liner pool for the very first time. I hear conflicting advice -- some people say an inground liner pool in our climate is a huge mistake. Others claim vinyl liner pools are the only way to go, and that they would never have a different kind of pool. We have extreme heat, upwards of 115 degrees, full sun, terrible water. Thanks in advance!