I agree with Mike. In the initial setup and day-to-day usage, I can’t think of anything about either that makes them notably easier or harder than the other.
IMO in the past, Hikvision firmware updates have been more of a PITA to get a hold of. Part of that is because the forum here has a great Dahua vendor who makes getting Dahua updates easy. Now that the forum is selling Hikvision models, Mike mentioned it should be easier to get the Hikvision firmware.