In 2003, my wife and I had to replace 10 windows and the sliding glass door in our house. We opted to use Window Wizards. The sales process and installation went well enough, but getting service has been a nightmare. Nobody seems to bother to check the voice mail on the service line. I've tried to call sales to get service, and still be given the voice mail. I've had service calls get canceled after taking a day off and sitting around. I've had repeated problems with some parts, and by the way, a "lifetime" warranty isn't a lifetime warranty.
My wife recently started pointing out to me that I'm going to have to call Window Wizards again. The vinyl on the back of our sliding door is cracked again, and the door is hard to open and close. We have a window that needs to be adjusted because it won't stay open, and the wheels on our screen door rusted out, rendering the door useless.