Have used all 3 - my very first brush was the vikan oval and soon brought a spare then brought an SL2 which
came with a superlite - i had an immediate 'praise da lord' moment and chucked the vikans
i voted for the superlight as everyday stuff for me just edges the pro window brush, BUT
Pro window outperforms superlight for 1st cleans/conny roofs and heavily cobwebed windows.
SBS - Pro window is a trading name for Salmon brushes they are very good the 12" dual trim in black is top class i also got the dual trim in white but found it did not clean or scrub nearly as well as the black bristle version.
Darran