Doug, as promised, an honest oppinion on the new brush.
All referances are to vikan rectangular.
Used the brush now on a variety of different jobs & i can say it's an excellent all-round brush. It definatley holds a lot less dirt than the flocked one & for any that does stick in the brisstles a quick smack through with the hand sorts it. Because vikan pack the brisstles in so tightley (which i personaly like) some bits do stick in nown again further down but not at the tips (most important bit). It feels lighter in use than the flocked as it holds less water, the flow through the brush is perfect (2mm pencil jets). this one was from cleantech, the jets, pipe & connector are top quality & the placement of the jets is perfect (a bit wider than most suppliers place them, which is great for me). The brisstles are a bit stiffer than the flocked & so flick a bit more but not a problem. It's better for bird poo, did a first clean with it, farm house covered in swallows nests, no problem. Tested it on two windows side by side, one rinsed brush on & the other brush off (bottom windows), both came up perfect (they were a maintainence clean, not a first clean).
One thing that is different to the flocked brush is that the brisstles dont splay out from the stock.i.e. they are 90 degrees from the stock all way round, normaly not a problem but for bottom sections of sash windows it's harder to cut into the corners. However, i've sorted my brush by grinding all the excess stock off it all way round, just to leave about 2mm from edge to brisstles. This has made a real difference & cured the sash problem, will be doing the same to my flocked ones, the brush now looks & feels a lot smaller & is less restrictive.
Overall a great brush, i don't think you will be dissapointed if you do buy one. It has now taken over as my main brush.
Tony