Used the trial brush today on a few houses and I must say this brush is a fantastic bit of kit ! Now bearing in mind I have only ever used an ionics brush and a vikan sill brush but I must say It is a pleasure to use the scrubbing power from it is great , the splay on the glass is just right you don't need to use excessive force to make it splay out and when it does it it gets in all the right places . I can see that a lot of thought has gone into designing and manufacturing this brush I also like that the bristles are set in resin making sure that they do not come out the brush head . The scraper is also a nice little feature that I actually used today to get some plastic tape from a frame on a new build . In all honesty I can not fault this brush . 10 out of 10 for it and I will definatley be purchasing one in the new yr . 1 or 2 little things that could be added to the brush though in my opinion . the corners could do with being rounded off . Also the ends of the brush could do with having a protective rubber edge or something to that effect .