Hope rx4 I've seen lots of folk go to those and within a year or two, either seized pistons, or they are so utterly fed up of the noise (pad dependant). They also don't retract very well, so unless you have had frame forks professionally faced, and a better than new true ness of your rotor, they will rub constantly
Sram flatnounts I've had less issue with, but there are less of them in circulation
I've had no issue with Hope technically. They do rub a little bit every now and then but other than that, all good. Worth it for the stopping power; so much so that I'm considering a pair for my road bike (others are on a gravel bike).
Hope rx4 I've seen lots of folk go to those and within a year or two, either seized pistons, or they are so utterly fed up of the noise (pad dependant). They also don't retract very well, so unless you have had frame forks professionally faced, and a better than new true ness of your rotor, they will rub constantly
Sram flatnounts I've had less issue with, but there are less of them in circulation