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The first two you test soaked are the two top spas made. Both are the only ones that are ISO 9001 certified. Why look anywhere else?
uhhh maybe because she is smarter than you.... ISO leaves much to be desired and is not a set a standards in as much as it is a repetitive manufacturing process ...maybe she is not the hypocrite that you seem to be in your posts you mention selling Hot Springs and Sundance but buying Artesian ....just wondering but what game are you playing and why....
Some of the things that are important to us are insulation/energy efficiency since we live in CO and the temp can stay cool for awhile. Also, warrenty and reliability...we are willing to spend more money for quality construction and engineering. Also the obvious of what feels good...I'm only 5'2", but we have some extra large friends too We really want to seat 4-5 people comfortably...which from what we've seen is actually 6-7 person hottub.So far we've wet-tested the HS Grandee and Sundance Optima, (we're staying away from lounger models) and we're planning on looking into the Marquis, Caldera and possibly D1, (not sure what models of those though yet). Our short take on the Grandee...our impression is that HS is just a really good quality spa. We were not impressed with the Moto massage enough to want to have it on two main seats. It also felt way to big for me, (the short one). The Vanguard felt too small for more than 3 large adults. I really wish they had a model in-between the two.