Purchase a Sundance Optima last summer
We loved the spa, we didn’t think we would used it as much as we do. We had an inground pool installed at the same time and wanted the spa to maximize our backyard. We finally use the spa more often then the pool. During summer almost every day and during winter every weeks.
Problem with the spa: 3 LED around the air valves broke, really disappointing from a brand new spa. The heater didn’t work while the pumps were running. Had to call for services. During winter it could have cause a major problem when using it or draining water. (if you drain the spa when cold it switches to freeze then the 2 pump runs and heat would never have works)