Hi,
the D-type lenses sell a bit more than the non-D, in theory. I saw one recently on ebay Germany (where I shop myself, ebay Belgium being too skinny) going for the same price than a D type...
I personnally think that the D-type lenses do not bring a definite advantage. Does it matter a lot that the camera knows the subject's distance? I don't think so, especially with a rather short telelens like a 85mm. The camera used is far more important and especially the accuracy in metering. For instance, my F3 measures light much better than my FE.
It seems to me the D introduction was another marketing trick tosell "new" lenses. The optical formula of your lens is exactly the same as the D type, and of previous MF 85 lenses.
ED glass that's another story. I have always noted the excellent quality produced by ED lenses.