i have a few quotes and one window we saw was by Okna Windows which we really liked. We also had a quote from Window World and their quote was the cheapest. I do admit the Okna seems much better made and was better looking, however, im only a homeowner so what do I know.
How does Window World compare to Okna Windows? We saw the Window World 4000 and the Okna 500 series. The Okna dealer also had the 600 series but that was a little more than the 500 and we didnt see that one yet.