I had one horrible thing to use very bendy under pressure, heavy to use for prolonged periods , for gfs I found it looks clean but the re growth with algi. Is very quick , stays looking better far longer with water fed pole I also find using the pole easier less mess and does a better job and you arnt blasting water under the roof tiles . I cannot remember who it was but someone made one out of a Gardiner's pole and put a turbo nozzle on it it looked very good and a lot lighter than the yellow thing you posted , I intend to make one myself when I have the time very useful for washing down walls and commercial buildings