My initial review of Dolphin gave them two stars for the construction of our pool. If your interested in that then read my initial review. I'm now giving them four stars for their follow up and warranty work. There have been several little things that needed tweeked since the construction of the pool. Dolphin has been exceptionally responsive and the follow up and fixes went very well. Also, one of the owners contacted me to talk about the changes they made to their business in the hopes that future customers wont face the same issues I did. That makes me a fan.