Here are some of the differences:

The Book Port Plus uses the up and down arrows, left and right arrows, and 
the
numeric keypad for its navigation. The up and down arrows always control the
speed, both for audio and text playback. The right and left arrows move by 
small
increments, the one and three keys move by increments a bit larger, and the 
four
and six keys move by even larger increments. This method is used both in 
audio
and text titles. The eight key is used to cycle through the different 
navigation
levels in a particular title while the seven and nine key move by that 
level.

The Plextalk Pocket uses the up and down
arrows to cycle through the available navigation options and the left and 
right
arrows are used to move by the chosen option.

The Book Port Plus uses a different guide voice.

-----Original Message----- 
From: Gary Lee
Sent: Thursday, March 01, 2012 6:43 AM
To: [log in to unmask]
Subject: ot - differences between plextalk pocket and bookport plus

I understand that they are the same hardware.  Has anyone used both, and can
tell me the major differences in firmware?
Debating which to get as a combo portable reader / recorder.

Thanks for the assistance