Stoners IG just does not work for me or us, I couldn't really tell you why either. Always streaks when we use it and just forget about it in cold weather. Everyone else gets awesome results, so I'm glad bceause its locally available to most.
I usually use either Finish Kare #146 or FK #228 Anti Static Glass cleaner concentrate cut around 5-10:1 or P&S Glass cleaner both with distilled water and glass only towels and follow it up with something like Finish Kare#425 or #146 to make it super slick.
Meguiar's old NXT cleaner was really good too.
The trick to glass cleaning for most people who have issues is usually keeping microfiber towels for glass only because anything in them can potentially be an issue for streaking. If you are getting streaking after your cleaning, a final wipe with distilled water might help as well.
Its also easier to clean in the sun because of the warmth and the sun makes everything go faster - if it streaks you see it faster and you can follow up. Things tend to streak a bit more in the cold and damp like in the fall.