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Some other things I thought about that I remember them mentioning.1. Is the Ozone features worth the upgrade? Ozone is a good add but it just depends on how much if its not included as standard.2. Is MicroSilk worth the upgrade? Again how much? Those who sell it may say its worth it to add but is that salesmanship? Those who don't sell it may say its not worth it but is that salesmanship?3. Are there things that are optional that I should consider upgrading on these models? Our budget could allow us to do some of the upgrades if they are worth the price. I roll my eyes that some brands have "extra insulation" as an option because IMO that extra should be standard but if its an option take it no matter where you live.4. I am trying to look at the manufacturer websites, but not all of them spell out if there are cool down seats or not and it isn't always easy looking at a birds eye picture of it. A cool down seat is a raised seat that typically in the front of the spa where you see the controls. Its really there because the pumps are under it and they need extra space. Look that at the overhead pics and you should be able to see a raised seat if you look closely.5. Is it typical to only have a few models to wet test and can you get a good feel if it isn't your exact model? Its typical and depends largely on the size of the store. The jet feel tends to be similar for models within the same family within that brand IMO but one thing that is different is the feel of the seats from model to model.6. Are any of these models easier or harder for maintenance or getting to filters to change them or anything else I should be aware of for maintenance? Should be similar.Thanks for all the help so far.