We needed a spa to fit in a small privacy enclosure that I had constructed off our deck. Keeping in mind that this is a very modestly priced product, it has served us very well. In a previous house, we had a two-person spa with a two-speed pump and separate heater element. We thought that the ar-400 would be pretty much the same. There were some differences, however. First, the spa walls on this tub are not smooth (and therefore, more non-skid). Second, the integrated heater/pump meant that we didn't lose all heating when the jets were running. We had a few bumps on the electrical side, but the problem was in our circuit (not the spa) and the support people were extremely helpful. It takes awhile to raise the temperature initially, but now it's always ready- even when the snow is flying.