Every November, the Keystone Crossings site -- primarily through the PRR-talk mailing list -- conducts an Annual PRR Modeler's Needs Assessment Survey.
The survey asks respondents to list their top three desired models in each of several categories, including steam power, diesel power, electric power, freight rolling stock, passenger rolling stock, etc.
Ballots are typically available for one week and are then summarized on PRR-talk and on the Keystone Crossings web site.
Summaries are also sent to several dozen manufacturers. Though our survey is unscientific, and doesn't take into account quantities each modeler may desire, we have noted that each year many of our top desires are announced as products within 12-18 months. So perhaps this data provides a "pulse point" to the industry.
The 11th annual survey is now open. Ballots will be accepted November 18-25, 2007. If you would like to receive a ballot, please e-mail jerry at pennsyrr at com.