We had our windows installed a year and a half ago. One benefit of writing the review long after the windows are brand new and shiny, is a perspective on how the windows have performed through a couple of weather cycles. A very professional process from start to finish. Beginning with the initial sales presentation from their representative, Steven, through the final installation, we were very pleased with WbI. Steven took the time to explain the construction of their product and provided a list of recent installations that we were able to drive by to see how the finished product looked. He didn't pressure us to sign at the initial presentation and came back a week later to answer a few more of our questions. The installers were efficient and cleaned up their work every day before leaving (the installation took about three days). At the end, the job supervisor pointed out two windows that he didn't feel fit exactly right (although we couldn't tell) and ordered replacements at their cost. They were back to install them about three weeks later. Bottom line, we remain extremely happy with our decision to use WbI. The windows still look great, they are easy to clean and we noticed an immediate difference in our electric bill. You won't regret considering Steven and his company.