Daz I've been unimpressed too, I think it cleans ok, but the quality of the brush is poor, and the bristle quality is poor, here is a picture if my brush after 7 days of work.
What do others xtremes look like? Have I got a bad one or are they all like this.
you can't expect any sympathy if you spent £20 on that
any experienced window cleaner will tell you
the bristle splay width is just as important or even more important as the length of the brush
removing nearly half the bristles just to make it light
and expecting it to clean as quick is daft
as far as i'm conceren the pictures says it all
lee if you do go back to the aerial brush
you need to use it properly
it took me a while to get use to it and im not new to wfp
you should be getting faster and faster and i do mean faster
you wont find a faster brush to use
you either can clean windows with it fast or you can't clean windows
its a proper piece of wfp kit
and that brush in the picture certainly isnt
i mearsured the aerial brush width of splay on the glas its almost 6" inches and stays that way in use
i did the same with the superlight double trim it barely manages 3"inches of splay before it goes out of shape
if you go back to using the extreme brush, good luck your going to need it
because your competiton wont be using that brush