The three inground pool construction types get compared on price constantly, but price is really just a symptom of a more useful question: what's the actual structure made of, and what does that structure force you to do to maintain it over the next 20 years?

Vinyl liner: the wall is not the waterproofing

A [...]

How much more does it cost you to maintain your pool this year versus last year?  Or is it too early to tell?
Have you switched from your local store to the web?
Will you do anything differently this year versus last year?  I think many people in the North east will not [...]