Many health sciences libraries are now considering integrated automated systems for an investment of several hundred thousand dollars. The request for proposals (RFPs) is the usual method of selecting candidate vendors for close inspection of promising systems. This paper draws upon the experience of the Library of Rush University and that of twelve other health sciences libraries. The libraries were interviewed by telephone using a short questionnaire that asked them to compare the RFPs with the systems actually obtained and their experiences in implementing them. The libraries were also asked, with the benefit of hindsight, what would they have done differently. Four vendors were also interviewed by telephone, in order to get their point of view.