The Story HD had a very nice display for its time (the first display to sport 768x1024 instead of 600x800 resolution). But software side of things was never great. The device also bricks easily (wrong firmware update file? too long filename? poof).
That said, I downloaded a random DJVU I found on archive.org (
http://ia802606.us.archive.org/34/it...0craniala.djvu ), copied it to the Story HD and it displays fine, on a device running 1.29 US firmware.