I have a Joseph Joseph one with a holder which fixes to the wall. I got it free as a tester for John Lewis.
It’s OK. Compared with a traditional brush its easier to rinse clean by holding it in the flushing water, but I sometimes have to apply significant pressure to scrub away anything stuck to the sides of the loo.
If I need another brush I’d probably get a silicone one, but I’m not bothering to replace the ordinary toilet brush in the other loo in the house.