Our 17 year old home had a few windows that failed (you could see the condensation between the panes). We researched manufactures and found Gator carried some of the best rated brands that are manufactured in Canada. The visit was arranged very quickly. The representative looked at all our windows and suggested only some of them needed to be replaced (he didn't try to oversell at all). The quote was reasonable and what i expected for good quality product installed by guys who know what they are doing. Nice people to deal with it all went very smoothly. I'm sure you can get cheaper stuff elsewhere but you get what you pay for.