the presentation very interesting and enjoyable. Only giving 4 stars due to the fact that I had no idea initially that I they wanted me to purchase their water system. I honestly thought it was just a water test to survey the area. At no point did anyone I talked to prior to the visit that that was the end game. Although I would have loved to have purchased a system, it was just not the right time for financially. Charles was great about not pressuring us to buy, which I appreciated.