Thanks to the MediaStorm Blog, I learnt that Jeff Towne on Transom.org has thoroughly reviewed the new Marantz PMD 620 Digital Recorder. The PMD 620 is Marantz's smallest recorder to date, and the overall verdict is positive.
While the PMD 620 is very small and light, the reviewer reports that it felt very sturdy and well-built. While mostly plastic, there's some well-placed metal components, and the switches and buttons feel solid. It sells for about $400 US.
This digital recorder joins the lineup of small digital recorders such as the MicroTrack II and the Zoom H2 that are ideally suited for multimedia work in the field, and to record ambient sounds for slideshows.
Check the PMD 620's specifications on Transom.org