Pihole/adguard are great, and while their function overlaps with uBo, they are still different. You should use both. UBo (and uBoL) have additional rules that

Pihole/adguard are great, and while their function overlaps with uBo, they are still different. You should use both. UBo (and uBoL) have additional rules that can clean up pages. E.g. removing containers of ads. It does much more too.