We have had a Taglius sand filter for 20 years. This year after putting the Quicrete pool filter sand in, it split open a lateral leak. Could be just age, I don't know. I do know I will not use their sand again. Never the less, in looking at replacements, the Taglius is about $500 and Permair [who makes the Taglius tank is only $265. Reviews of the Permair tend to show early failures after warranty ends. My question is why is the Taglius so much more expensive? Thicker fiberglass?