We are VERY happy with our Indow window insert! We moved to an older home in May 2019 and the master bedroom was unfortunately on the front of the house. The former house never had traffic noise but this house was terrible...I was heartbroken and extremely distressed by the traffic sounds from the street. I started researching noise reduction and that is when I found Indows. Yes, it was expensive (in my opinion) but well worth the money. It has cut the noise down so much that most traffic is barely noticed. I will forever be grateful for our Indow Window Insert. I would give it 10+ stars.