RHH: What album would you say was the most ahead of its time?

This question is inspired by many people claiming that Reasonable
Doubt is ahead of it's time(which I vehemently deny). There are a lot
of albums that you could say, but what would you say is the most or
some of the most.

Bq: what album would you say is far behind it's time(at least as far
as good albums, entry of bad albums like that)
An album i think that's advanced for it's time(still today really) is
the cold vein.