I have been using Dynamic Registration since version 2.4. It has been wonderful. The only limiting factor is imagination. Technical support is promt, insightful and with a smile. The product grows to take advantage of changes and enhancements to the DNN platform. Updates are promt to adapt to structural changes in DNN. Add Dynamic Forms to the tool box and you have a formidable arsenal that is also easy to use for the non-professional user. I just purchased the Collection 4 and can't wait to try out all the other fine integration.
Known bug reported on 11/7/2007 that renders the rich text editor unusable. Promised fix to be delivered "approximately 2 weeks" from 12/6/2007 not yet released. Tech support failed to answer 1/8/2008 interogative:-( Appears to work okay on version 4.5.5 and 4.8 (above problem discovered on version 4.6.2