sun vs viwintech Which would be better?

[jollyroger]

I am looking to replace some windows and i have been looking at the sun windows inc out of owensboro ky. The problem i am finding is that there are no reviews on the company. They have been around for 30 yrs and no reviews. I am looking at the DH54 Series. The salesman i have been talking to also quoted me the viwintech cs6000. The viwintech are just a litte more expensive but i get aluminum screens and a 3 yr glass breakage warranty on top of lifetime warranty. I thought about maybe getting a quote for simionton windows. Any help would be greatly appreciated.