Delighted to share that the 4/6 seat Garda is a game changer for my backyard health retreat! It's the perfect size to soak and relax after a long day. The construction is very impressive and much nicer than an inflatable. The heater and filter do its job, and the covers hold the heat in well. I am in New Hampshire, where the weather is changing with the seasons, and I'm hoping to run it all winter- as long as I can afford to run it! I have not scrutinized the electic bill yet, but I estimate it costs about $40 more per month (less than a helath club membership). The maintanence has been pretty easy, and I make it a point to keep the filters clean before each use, test the cholorine levels, and use a skimmer to keep the hair, grass, etc from settling. The bubbles setting is excellent, however I prefer the calm peacefulness of a quiet soak sans bubbles. Overall, this hot tub has met my expectations and is surprisingly affordable. As long as it will last, I do not feel the need to upgrade to a hard-side $10k tub.