Agree with Mike, you can get a flatness to the frames over time, yes they are clean, but defo lose some of that zing, which vision is bringing back.
We did a large commercial housing association earlier this week ( a converted mill ) with big chunky painted frames and I have to say they really shone using just vision treated pure water, didn't use the usual g101 as 4 storey building. So vision defo has some advantages.
I've been out on the glass a lot less, so the bubbles were a little strange and did slow me down for the first 3 or 4 windows, but you need to see past that (ie its part of the product) and rinse as per normal - thereafter your back upto speed. You just need a little more faith in your technique and abilities.
Vision has been used now for nearly a month, the guys like it, on glass time is good and no customer complaints
Darran