I'd bet Campag brakes will require less faff than any of the SRAM/Shimano stuff; probably costly though.
Given they have comparatively naff all experience of hydraulic shiz - and probably fewer patents - I would be pleasantly surprised if this was the case.
TBF I have no first-hand experience of Campag discs, but that's because I do have first-hand experience of other things Campag and that experience dictates that I'll choose the path of least resistance.
What are the current recommended go to have no problem with disc brakes for a road bike?
I have the Juin Techs which are good but could be better. Any SRAM rival I have seen have lever problems. Most shimano seem to have leaky calipers.