After calling a number of other companies, I got the best overall cost from WOW. Furthermore, John Baker was a pleasure to deal with and obviously knew his products. Although they were busy trying to get as many windows in as possible before the end of the year, John agreed to schedule my installation on Dec 21st. As luck would have it,we had two feet of snow on the ground that day and had to cancel. However, to make sure that they could install enough to satisfy the tax credit provisions for 2009, the crew came out a few days later, on Christmas Eve, and worked all day in very cold weather to install the three large sliding glass doors. Two weeks later we scheduled the second phase, and they installed all the windows and the other doors, also working in weather that was windy and well below freezing. In both cases, the crew took their time and did a superbly professional job despite the unpleasant conditions.