Their ok.
As pointed out in the previous thread the brush feels weaker then the normal mono, mine is beginning to fray on the edges after just a couple of weeks. It feels like a Gardiner's brush on the glass.
I had issues with the 2 end jets spraying in the wrong direction so I filled them in with glue.
As for the rinse bar, I don't really think it speeds up rinsing. The jets are so small (1mm) that the water shoots out at a high pressure and rebounds off the glass. I would prefer just 4×2mm jets.
Would I buy another? Probably not, the original xline mono is spot on IMO.