I have all three brushes.
I have currently gone back to the flocked brush on my 18' sxl pole instead of the Mono dualtrim brush.
You will be happy with any of the brushes, but I would point out to those who use the superlite rinseing on the glass that the brush bristles are monofilimant but they are bunched together therefore they hold dirt so you risk leaving spots as the brush holds dirt at the point of impact with the glass. If you compare them to a True monofillimant brush like a Salmon brush,ie The cleaning spot brush you will find that each individual bristle stands on its own at the pont of impact on the glass hence it will not hold dirt.
The flocked bristles are softer then the mono bristles so you dont need to apply as much pressure on the pole. It glides easier on the glass then the mono. Its a faster brush as when you drag it down the window it cleans the entire glass that the brush passes over in one sweep, you will have to do 2 sweeps with a mono brush as the brush misses tiny fractions of the glass because the mono bristles are grouped together in clumps. so extra scrubbing is required. Though the flocked brush is lighter when dry then the mono in use the flocked is heavier as the brush holds more water then the mono.
The single trims are good but tey sit of the window more and dont weld around the frames as well as the dual trim.My advice go for the flocked,its good on first cleans,its better at moving snailtails but its a touch soft in the bristle department.You should rinse of the glass with any pole you get off Alex as the monos are not True mono Filimant brushes.
Neil