Water fed pole brush heads

Hello everyone, I’m new to window cleaning and have started with trad and wfp. I have bought the facelift bigboy 2 Phoenix deal as a starter pack which comes with the Facelift badger brush. I would like to buy a second brush head for doing dirty conservatory roofs to save my badger brush for windows. Do you recommend any? If the badger brush head is not a great head for doing windows I could use this for conservatory roofs and buy a second brush for windows. Thanks 

Great place to start learning about brushes mate:





I have never had one but I don't think the badger is a great brush, they've been on a sale for ages now and they keep dropping the price too, I think they are heavy at around 300-350 gram.