I think brushes are a personal thing what I like you might not I have just tried the line DuPont brush unfortunately I don’t like it with hot water it’s no ware near stiff enough for first cleans , so I have reverted back to Gardiners stiff supream, but they last a maximum of 12 weeks which I think is very poor life span especially when you consider what they cost and I don’t personally think there is enough bristles in the brush either . Years ago we used to use vakan sill brushes last for years but it’s like having a brick on the end of the pole , but scrubbing power and life span was far superior to any brush on the market now