"Werturteil" is the translation found for "value judgement" in my dictionaries, but I've a feeling that they are synonymous.
I'll see if I can find any other references............

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Note added at 50 mins (2007-03-27 17:07:21 GMT)
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This is where it all gets very philosophical:
"Value science is still very much a pioneering effort. value experts, i.e., "Axiologists," or practitioners of axiological science, are not yet to be found in the yellow pages of the phone book. This does not mean that people are not making value decisions, they are just as they always have been and always will be, for to be human is to value. However, value capacity in individuals differs from the most sane sensible, and humane level to the most insane, fiendish, and inhumane level that one can imagine. Value preference, value judgment and value decision making in both positive and negative frames all are related to capacity and knowledge."
http://www.hartmaninstitute.org/html/AustinHVP.htm

SO "value decision" might be the better choice here.