[NWH]

I’ve never had an issue with just using a 50 degree gooseneck you can’t see if you’re going up to high and what the top edge is like anyway when you’ve rinsed so it’s not an issue for me,people are glad to have them cleaned it’s what you’re used to using and at what angle.

[Stoots]

I've always adjusted the angle too that's the best way to clean them.

But to be honest I'd be better off just binning these jobs off I only have about half a dozen left

As for swivels I've tried them and they are better in some tights areas but worse in other scenarios such as using the sides of the brush head to scrat something off. I can work with or without them you just get used to it either way.