We replaced all of our windows last fall after my husband spent the entire summer doing extensive research and getting about 6 quotes where sales people came into our home (very annoying people). We did go to Home Depot and another place that I think was called the Roof Depot (siding, roofing, and windows) in minneapolis. But mostly he did research on the internet and read postings where people discussed different windows.
We ended up going with vinyl windows because of cost and less maintenance. After debating between inserts and full replacement we went with full replacement windows which is sometimes called "New Construction". The brand we choose was Milgard because of its excellent warranty and the look of the window. Although our windows are vinyl they have a woodgrain look. The warranty is lifetime and not only includes replacement parts but also labor. I don't know of any other company that provides that kind of warranty plus labor. The warranty is transferable to the next owner if you sell the house within 10 years.
Just as important as the choice of the window is the installer. It doesn't matter what window you buy, if it is installed wrong you will have problems.
We did not see our exact window in a showroom before purchasing but saw the basic window the guy brought into our house. We selected the wood grain from color chips the sales guy had.
The company that installs Milgard windows in this area is called Sealgard. They did a great job of installing and also doing some exterior vinyl replacement on the trim. The lead installer makes the wood sash himself in his workshop and it is absolutely beautiful. We did have some issues with them in a delay and mixup of the order a couple of times which was pretty annoying but in the end the quality of the work made up for it.
If you have any questions, you can email me. There is a lot to learn and a lot of options when it comes to windows. I think it was more difficult then buying a car! Goodluck in whatever you end up buying.