We are looking to replace the windows in our home. We got quotes from Window World and Champion yesterday and they are vastly different in price, although the windows and warranties don't seem to be that different. Not looking for any bashing here, just honest testimonials if you have ever used either of these companies, or another, for window replacement. Mostly curious if Window World tries to make up for the less expensive price on the windows by trying to charge for things once the install has started, or if they can just offer the deeper discount because they deal in volume. Thanks!