Wagtail by far the best for me too,don’t be fooled by that liquidator the results look first class on certain lights and angles in the sun,I used it on mine over the weekend to prove a point. The results looked great at 1-2 o’clock when it got to around 6 when the sun went down it looked like a child had been drawing on the glass,did the same today with a dogeard wagtail the results were almost flawless. Like I say on first glance they look great but at certain times of the day they make a good trad window cleaner look like a beginner.
Mines gathering dust, it is great at cutting out detailing but its crap in the middle of the glass.
I tired again and again with it but its never going to work for me, accepted!
People will say that its down to user not having a good technique but my technique is fine thank you very much.
I think part of the problem was polz n bladz was instrumental in the development of this squeegee and as a result it works perfectly for him, and anyone else who can copy his style. But for a lot of people it just doesn't work.
There is a few videos on YouTube like "how to fix liquidator problems" which shows a lot of people are having trouble with it. I dont think it was designed with the masses in mind, more for the select!