From what I've been able to find out, the Discovery Plus is essentially a Discovery II with a five-piece toolkit (hose, two wands combo upholstery/dusting tool, and crevice tool) and a pair of brackets to hang it all on the machine. The top bracket holds the two tools on the front and has a pair of hooks for the hose on the back. The bottom bracket holds the wands and provides a pair of channels for the hose to go. The URL below corresponds with a Vacuumland thread (coincidentally originated a year ago today) that shows a Plus, somewhat dirtier than mine.
[URL unfurl="true"]http://www.vacuumland.org/cgi-bin/TD/TD-VIEWTHREAD.cgi?28548[/URL]
