Purchased new windows for the upper floor of our home. I called Koski based on a recommendation from a friend, and I'm glad I did. The sales rep was friendly, the installation team was great, and I'm very happy with the final product.
Koski was on the lower end of our competitive quotes.
One story about attention to detail - at the end of day one they decided they were going to pull out one of the windows and redo the installation. Apparently it was a bit off-center, which I didn't even notice. I'm glad they did, and glad that they care enough about the quality of their work to address it without being asked. Gives me confidence that the whole job was done with attention to detail.