First off salt systems vary widely, we were against salt because it was corrosive and was a timer based system so the system would make chlorine on a timer and if one week you used the tub a lot the sanitizer would get used up and the water would go off then the next week if you didn't use it the sanitizer level would get too high, this you-you water and corrosion issues made it not a great system, there were better easier, lower chem options like enzymes and other additives. the reality is it just wasn't worth the cost. The newer systems have changed that, 30% lower salt, and the biggest gain is on demand, the unit tests the water and then adds sanitizer only when needed, lasts longer, costs less and is easy to manage the water. Currently the best one by a long shot is the Master spas system, we beta tested it for a year, it blew us and every other slat system we have ever tested out of the water.
Hot Springs Caldera are not a horrible, they are decent mid grade tubs. But they are made in Mexico so with tariffs are over priced, they are corporate owned so more money on the price tag and more money into marketing branding etc. over build, they use a ton of goofy non compliant connections and parts which are there for one reason only, to lock you into the expensive dealer eco system, they are boomer brands, the push should be towards easily repairable reliable products not engineered failure points and high proprietary overpriced parts.
These brands are ranked in the upper mid with consumers, there are loads of good, bad and mid rankings but the reality is most reviews are fake, its a fact, in some studies (Forbes etc.) up to 70% are fake. the big corporate owned brands spend a lot for social reviews to both review companies and to influencers and bloggers. If the ranking you care about is verified-review infrastructure on the brand's own site — which is the real competitive story — the order is basically: Master Spas (verified widget, per-model, with counts) → Hot Spring / Caldera (first-party self-collected, moderated, not independently verified) → Bullfrog / Artesian (curated testimonials) → Jacuzzi / Sundance (nothing on-site). Only Master Spas can point to an independent verification layer, and even Hot Spring's "real owners" reviews are collected and gated by Watkins itself.
These are the big 3 builders, hot springs is largest Jacuzzi 2nd master is 3rd worldwide but the largest US builder.
Master Spas Trustpilot upper Mid, ConsumerAffairs upper, BBB A+
Hot Spring/Caldera Trustpilot low, ConsumerAffairs mixed-negative
Jacuzzi/Sundance Trustpilot low, ConsumerAffairs negative
When it comes to massage its all about the jet size, ignore everything else, here is a video explainer, https://youtu.be/pn2rdgv8yOc?si=kWJuVhE9q6bjuE9X
There are several good brands, id look at jacuzzi, Master, artesian but a lot depends on the budget, Ill get bill to reach out with some local options.