I have been looking at the Entourage Edge for myself, and find it quite intriguing.
You might want to browse their forum (
http://www.entourageedge.com/forums/forum.php) to read how other academics use their Edges.
My concerns about buying an EE or the smaller Pocket Edge are: the e-ink side isn't pearl e-ink; the product might be due for an update (to include 3G?); the dictionary is on the LCD side and not available directly through e-ink (I could be wrong about this); and the e-ink side does not rotate into landscape view (although there are work-arounds for pdf viewing in landscape).
Also, I can't make up my mind whether I want the small portable Pocket Edge or the usefully large original Edge!
But you wouldn't have that problem.