Finally ate the ripened cherimoya and while not bad, it also wasn't exceptional in any way. I have fond memories of eating cherimoya as a kid in Chile and this does not compare. Not sure the ones in California will either since its hard to compare against childhood memories.
Anyway, this cherimoya was OK but not as good as my home-grown sugar apples. As a matter of fact, my Sugar apples are the best tasting annonas I've ever had (with the exception of the aforementioned childhood cherimoyas), including rollinias, atemoyas, red sugar apples, custard, etc.
Jaime