I am starting my install tomorrow morning myself on my Radiant Metric pool. It has a lifetime warranty and not pro-rated, aluminum walls with foam in between which are 2" thick. Called technical a couple times for questions and were very helpful and polite and told me to call them anytime. So far all +'s for them. Paid $6,600. Will be installing semi inground which you can actually install completely inground if you want to also and does not void warranty. Even a SWG will not void.