They way I do my windows is after I'm done washing the car and they are still wet I use a wiper blade to scrape the excess water off. Then I dry them off completely. Lastly I used Invisible Glass. After all this the windows are perfect

 

newspaper = oldddddddddddddddd newssssssssssssss
and so far it is the best in the "windex/window cleaning" department....unless you go to a better polishing compound or another strong product.