clx 22 excellent pole for every day use. Also have clx 27 which is good value pole but would not want to use it as every day pole.
Brushes are about 10 1/2 inches (a bit less than 12 anyway). Best gardiners brush IMO is the flocked dt sl (others for me do not scrub so well) but recently have gone back to a vikan on most jobs because although heavier I think it scrubs better.
The medium mixed dt feels very nice on the glass and is quick to use as it glides over glass nicely, but for me does not scrub very well. Probably good on monthly cleans.
Brushes are a matter of preference.
But in my opinion the dt superlite flocked brush isn't great.
It does a decent enough job and is good on leaded windows but I question the longevity of it.
In my experience they look like crap after a month!
I've got a dt superlite mono brush which is over 18 months old but looks in much better condition than the flocked version.