The standard 4GB QUE model can hold up to 35, 000 documents or the equivalent of up to 35 filing cabinets worth of documents.

ENGADGET: Plastic Logic debuts QUE proReader, shows off truVue publications

And QUE is always on when you need it: its battery can last days, instead of hours.

ENGADGET: Plastic Logic debuts QUE proReader, shows off truVue publications