im going to try the reach it ultra lite brush i must say it looks very nice @windowswashed do you use there hi flow hose i cant find much info on it whether pole hose or reel hose ? im also looking at the radial rocker as this looks like a real good scrubber i no its heavy but rincing on the glass should counter the weight a bit ! also can you replace and change the brustles like the constructor brush as that would also be a game changer !!
I only use a rocker with blue mesh and silver stainless mesh for removing egg thrown on glass and for stubborn solar panels, the brush is too heavy for normal window cleaning.
The ultra lite I use the 18inch and occasionally the 14 inch for most of my work for maintenance cleans.
I use the hi flo hose as a pole hose which is 10mm external diameter and 8mm internal diameter so plenty of water flow so doesn't drain my battery or strain the pump.
I do one scrub downwards from the top of glass and straight pull down for a rinse if dirty. Always sheets the water even on the worst of hydrophobic glass with the rinse bars on a reach it brush as the bristles are so compact that the water sits above the bristles as it's pulled down the glass and runs around the edge of the brush when turned at a slight angle for keeping contact with the rubber seals.
Can't fault the brushes, I adapted the goosenecks to suit my personal preferences and only use their brush heads and not their goosenecks.