My round is mainly Domestic.
I have some Gardiner poles with the metal Gooseneck but I dont like them. If you have the small vikan brush on it does not seam to sit right on the glass. The Brush seams to pivot on its edges a lot. The pole also feels heavier then one fitted with a plastic gooseneck. This is due mainly because the brush on a metal gooseneck sits further away from the pole, therefore the higher you go or the greater angle you use the pole at work,ie going over a Con roof, the heavier the pole gets.
The plastic goosenecks are great, you can adjust them for velux windows, Windows above Con roofs etc. They are robust, I have never broken one.
The only fitment I put on the plastic Gooseneck is a 4" cone which I screw onto the plastic Gooseneck then I screw the cone into the brush. This allows me to reach over deep sills. It gives the same reach as a metal gooseneck. It also stops you wearing the fibre glass pole down reaching over sills.
Nel.