We would like to thank all that responded. The limited consensus suggests that Agilent chips will suit our needs. We will be purchasing them in the near future and would be happy to discuss our experiences with the curious. As we are also in the process of designing the chip, we'd be glad to correspond with people interested in chip and experimental design as well. ------ We are in the market for in situ oligio microarrays. The purchase of the microarrays will represent a significant investment of our resources and dictate the course of several projects over the following months. Based on our needs, we are preparing to purchase our chips from Agilent. Before we do so, however, we would like to poll the community for any experiences, good and bad, that people may have had with Agilent chips. If you have experience with Agilent chips and would like to share them with us (or would recommend an alternative vendor), we would appreciate you comments. Thanks Patrick Danley Kerry Shaw ----- Patrick Danley, Ph.D. Postdoctoral Researcher Department of Biology University of Maryland phone 301.405.8303 fax 301.314.9358 email pdanley@umd.edu http://www.life.umd.edu/biology/shawlab/patrickdanley Evolutionary Genetics Reading Group http://www.life.umd.edu/biology/shawlab/patrickdanley/evolgen/ patrick.danley@gmail.com