Well, there are so many tastes - some people like fan jets, some hate them, some like rinse bars, some hate them.
How can I recommend something I love when it costs so much more and could end up a very expensive spare brush? All I'm saying is I love it and wouldn't go back to a 'normal' brush.
Not good in corners on a first clean (when they're proper mucky) is because the really aggressive bristles don't reach that far and the outer bristles are only good on standard dirt levels.
If you want a recommendation from my experience and how I found it and assuming you have at least 650 litres to work with then here it is: Buy it now and stop messing around with cheapo Gardiners/X-line rubbish. It paid for itself in a week easily.
My opinion based on my experience. Nothing more. Feel free to hate it and like 4 pencil jets or whatever.
Previous brushes I have used: Tucker brush (full Dupont), X-line sill brush (Dupont with rinse bar), Brodex, old time Gaz brush circa 2007 from this forum, ionics, Gardiner super light with pencils, fans, and tried their rinse bar. After a week of the Radial, it all feels like cheap crap. Not being condescending to it all, but that's how it feels.
Like, the Gardiner rinse bar which bolts on top of the brush, it juts out and catches the brickwork, it's made of soft plastic and the holes then close up or start spraying the wrong way. With the Radial, the rinse bar is integrated and tucked away so it doesn't catch. It's made of a strong plastic, if it does block they actually provide you a long pin thing on a dongle thing to use to unblock it.
Everything has just been thought through and engineered properly. Plus, it will be like Trigger's broom. Every part is replaceable, bristles, jets, the works. Could last years if they keep supporting it.