Quick Silver Z

I haven't had much success with Stoner's invisible glass, I generally use Sparkle. I also have dedicated micro-fiber towels I only use on glass. I also try to use as little cleaner as possible, otherwise your just smearing it instead of buffing it clean.
http://www.glasscleaner.com/

tellefan

Sparkle is by far the best I've ever used. As stated before, use a microfiber towel, and one that has not been washed with fabric softener. It might take a few washings to get all the built up stuff off. But there is none finer. David

stevedun

Sprayway glass cleaner from Walmart. $2-$3 per can. It beats invisible glass and anything I have tried to use. Absolutely no streaking. I do use newspaper, but I also used newspaper with Stoner invisible glass and this is still much better. Also use it to clean bugs off nose of car. Spray on, let set for a couple of minutes, use damp cloth and bugs wipe right off!

waunavet