JJK, personally. Demon Slayer does a shonen story very well, nothing innovative per say but it knows what it's trying to do and it does it very well. It does benefit from a well animated anime also! I want to say that some manga have been less fortunate in their anime adaptations but DS' is so good that it would be more fair to say that some manga have had adaptations that fell short to some folk. JJK however is more interesting to me as it's story is less...standard? But hey maybe it's more interesting because the manga is still ongoing. I love both of 'em a lot tho!