Summary: If you are considering this device to set up a multi-SSID / VLAN configuration, look elsewhere. After working myself into a frenzy trying to get this to work properly, their tech support told me.. "Yeah... that doesn't work. Can you return it and get the DWL-8200AP instead? That one works.
Pros: Compatibility and coverage seem to be good. Essential functions are reasonably easy to configure, but still a little obtuse. Power over Ethernet. Plenum rated. Cheap for the advertised functionality.
Cons: The documentation is horrible. Tech support is pretty lame (although I have noticed improvements to phone support recently). Multi SSID and VLAN functionality do NOT work as advertised in the current firmware release. Compatibility with certain gigabit switches is affected when using a PoE injector.