[Stephen burton]

I'm in the process of buying my first gardiners pole im going for the slx 25 what is the best brush to choose, thanks

[M & C Window Cleaning]

For residential work with cold water I'd go for the Supreme Medium Mixed brush. If you're using hot water I'd go for the stiff one as the softer brushes tend to go out of shape quicker.

http://gardinerpolesystems.co.uk/all-products/water-fed-poles/brushes/supreme-brushes/the-supreme-medium-hybrid-brush.html

[DeLuce]

If using cold is definitely go with the Supreme Soft Hybrid brush. The inner bristles are boars hair which give great scrubbing power. Won't go out of shape with cold.
The medium mixed is a great all-rounder.

[M & C Window Cleaning]

Something else to consider is how much leaded glass your round consists of as stiffer bristles can lift lead with repeated use. If you have a lot of these kind of windows you would be better with a softer brush or a flocked brush.