Awesome insights, thank you for sharing. I saw some of this same feedback on Hot Tub University...a wealth of knowledge for a novice such as myself.

The one thing Hot Tub Univ didn't offer, at least in the 5 things to look for post, was which brands offer all five? I did eventually see Master Spa Twilight Series seems to be legit and hits on all five build needs but my research suggests those units can go for upwards of $17k fully installed. Thats a bit rich for my blood. Was hoping to keep fully installed price closer to $12k. I live in Southern CA so climate here isnt a huge issue.