Once i get all my files from another forum i posted on i can answer these in more detail.
But basically i would look at 3 brushes.
Sill brush for fascias, conny roofs and urm sills
Extreme medium mixed for regular cleaning.
Dual trim for first cleans not 4/5 or 6 weekly.
With those 3 brushes you can clean pretty much everything domestic wise.
I do however carry about 7 brushes, other vans carry more some less.
For instance the Gardiner hybrid brush. Black with blue bristles is epic on leaded windows. Very very very fast, doesnt rip lead and clean really well. yet for normal glass dont rate it:)