I was one of the people who always used Windex on my 21" Sony GDM-500PS. Yes, I sense many of you cringing but I really never noticed any change in my glare coating (or lack of one
). I just paid 12.00 for a rag. Yes 12.00 but you dont even need to use glass cleaner. It's called the Mystic Maid. It was apparently created for 'clean room' applications and it works great!