We had all the windows in our home replaced by Optima (brick to brick). I waited a little while to write a review to really see how the new windows were performing. The temperature in our house was terrible. Since replacing the windows we hardly hear the furnace turn on. a huge difference from when we had our old windows. They sales process with Gleb was very easy. We specifically liked his personality. He went though everything with us and was super patient and answered all my questions. Arthur came out to measure the windows. I couldn't believe that they installed all the windows in just 1 day. Everything was cleaned up after they were finished. Do dust no mess it was great! We had one mild issue which was rectified very quickly. Overall we are quite please with the process of getting the windows replaced and the actually windows as well.