I can say that I am a pool store owner in Tennessee and I am a dealer of Trilogy pools and they are a great pool. As for the person installing it, don't go by what is posted online. You need to go in and talk with both companies. I love when a customers comes into the store and sits down with me to discuss their dream pool. Also, depending what the negative comments are, you sometimes will get customers that are impossible to please who will go online and completely bash you, but you don't hear all the positive things about the company. You need to ask to see some of their pool installs if possible. Spend as much time with the builder or potential builder as you can, you will get a feel for who is the better choice.