Good info on a topic that is always overlooked. I'll be looking for the Meguiar's or Stoners. For now I have to clean my filthy windows with my dollar store crap... that streaks like hell.
I have a question: Is there a method for cleaning windows when it is really humid and especially when it is cold with dew. It makes it a lot harder to get it to stop streaking. Or maybe that's because of the cheap stuff I've been using?? Seems like it is always in these conditions when I realize I need to clean mine... but, it is always a PITA if I try to do it.