For us, we recommend (and use) INFINITY from Marvin Replacement Windows. There is simply no better value than the INFINITY Window. This is a super high quality product that will look gorgeous and last for decades. Yes it will be more expensive than those “cheap” vinyl windows, but the difference in price isn’t nearly as much as the difference in quality. Here are just a few examples of the differences between Infinity Windows from Marvin made with Ultrex® fiberglass, vinyl and wood windows.

• Vinyl can warp and shift under everyday conditions — potentially making vinyl windows difficult to open and close and affecting their all-around performance.
• Ultrex® resists sticking, swelling and warping so Infinity windows and doors will continue to easily open and close. 
• Vinyl can shift up to 1/4” under everyday conditions which may compromise your window’s performance.
• Ultrex® expands at virtually the same rate as glass, so your windows stay tight and true. This makes Infinity windows resistant to leaks, seal failures and stress cracks that can compromise energy efficiency and long-term performance.
• Wood windows offer classic beauty however, depending on the environment, can require a lot of extra maintenance and care. Wood windows tend to mold and rot easily if not properly maintained.
• Infinity windows capture the beautiful details and profiles of wood – without the maintenance. EverWood^®, is a breakthrough engineered wood grain interior finish, offers natural looks and textures – plus the durability you demand. It looks, feels, paints and stains like wood but is completely low maintenance.