Holy cow! I thought $10k was alot to replace all of our windows! We looked at Andersen when we started but heard that they were really expensive. When I asked our contractor how much he said it would probably cost double which is still 1/2 the price of what you're saying for about the same amount of windows. 14 windows @ 40k is $2857 per window which I'm assuming includes installation. That sounds like robbery to me unless these are some really big windows. For that much cash I would get at least 4-5 quotes - we only got 3 for our replacement but it was 1/4 the price of yours. Look online too. We were able to buy ours at a discount from a wholesaler: http://www.thewindowstore.com which saved us several hundred dollars. Make sure your contactor is licensed and insured. If you can't find any contactros through referrals check out http://www.craigslist.org
We went with Milgard too but elected for the Tuscany line. Our contrator recommended them over the StyleLine. We ended up buying them online which saved us several hundred dollars and had a local, licensed contractor install them. We got 3 bids for the install and one was ridiculously overpriced so we only had to decide between 2. At the end of the day we spent just under $10k for both the windows (which included a large patio door) and the installation. So far we're really happy with the work but we won't know how good he did until we get through at least 1 rainy season! Do yourself a favor and shop for the window online. We bought ours here: http://www.thewindowstore.com and check http://www.Craigslist.org for local contractors if you don't have any referrals from friends. Whatever you do, get multiple bids for both the windows and the labor. You'd be amazed at the difference in prices for the exact same stuff.
Our first house had Simonton windows in them which we were very happy with. We never had any service problems or broken windows. We had to replace the aluminum windows in our new house with vinyl and got prices from IWC, Certainteed and Milgard. It seemed like none of the dealers in our area had Simonton and we had heard good things about Milgard. After comparing the pricing we went with Milgard (more expensive) primarily because of the warranty and the fact that it was transferable. We ended up buying them online here: http://www.thewindowstore.com as they were priced better and the company was easy to deal with.
I bought Milgard windows over the summer after looking at IWC windows and Certainteed. The price was slightly more expensive for Milgard. But can you beat the lifetime warranty on parts and labor? We ended up buying them on the internet here: http://www.thewindowstore.com We were actually pleasantly surprised with the service since you never know what you're going to get from an online company.