I jave had moat window replacement companies oit to bid on various rent houses. Window World of Murfreeaboro has been by far the best window for the money and they were installed right.
The salesman pointed out gutters and other moisture problems that if I didn't correct them would have created similar problems to other complaints herr. Purchased more expensive windows on a personal house (2001-with a "lifetime warranty" now come with a $235 trip charge today. Not Window World. They havemt charged a thing and windows in one house look new.
Unfortunately, several competitor window salespeople had alot of bad things to say about Window World, but their product and service didnt add up. You be the judge.