We are shopping for our first hot tub and are thinking about purchasing either a HS Pulse with free salt-water ACE system or a HS Rhythm. Looks like about $2,500 difference in price. We are purchasing just for relaxation (2 adults with 2 HS kids), so we don't need many different kinds of jets, but we want to be sure we purchase something that will last 7-10 years without big expenses and the kids love the waterfall and lights features. We've also heard from a few friends that they've gotten a rash from their hot tubs, and we're wondering if the ACE system reduces that issue? The Rhythm looks to be just a bit smaller, but for the big price difference we'd be willing to go with it. Any recommendations - and are there any models other than Hot Springs that might be less expensive for our interests but good quality? Thanks for any guidance people can provide!