Window Replacement in Twin Cities

[Janel Y.]

Does anyone have a good recommendation for a window replacement company in the Twin Cities, MN, area? There are obviously always ads/solicitations from different companies, especially the "big name" companies, but I'd like to know with whom you've had a good experience and if you'd recommend any company/contractor in particular. Also, I'd appreciate your expertise re: how much of a value-add it really is to replace windows in a 20-year old single family home with original windows.