The report consider the application of AHP and ANP for prediction of probable modifications of the factors, which mainly influence a choice of a type of vibration isolation system for the manufacturing. Similar tasks take place in the problems of external designing, when it is necessary to make decision being effective in varying environment. ANP technique gives limiting impact priorities for influential factors when the experts' preferences are constant. AHP technique with use of the dynamic judgments enables to find out the tendencies of priorities changes based on the dynamic experts judgments, which are given by defined functions of time. The obtained outcomes are consistent and supplement each other.