On past cars of mine I have waxed the windshield and windows with just a normal wax. I loved the results of the water beading quickly off side windows and windshield. I think it works much better than Rain-x. I haven't heard of many people doing this but like I said I love the results. I have had some people tell me that by doing this There will be a layer still on the car that Will never come off and I will stain or leave a layer of wax which will just not give a clean crisp look. You guys have any suggestions or experience? I use meguiars next gen. 
