Hey Spa User Guy, I do think this post got out of hand. We can all get along no matter what spa we like, as long as we are all soaking it is all good.
Just so you know, Geloy is used in jets by a couple of companies. Incoloy 800 is the standard heater sheath alloy and it is not bad, but Incoloy 825 alloy is a little different and much, much more chemical resistant. The reasons most companies will use some of these things is simple, cost. You add Viton seals, geloy and an 825 heater to a spa it does not add to the appearance of a spa one bit, but it will add around $200 to the price to manufacture the spa. The consumer will only see the benefits years down the road.
I do not sell spas I only fix them.