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As far as cost goes, E-readers are only now coming down in price. As price declines and features improve, I think stores will begin carry a broader selection, which would stimulate competition and drive down prices further. Right now the brands I usually see are Kindle and Sony. Top visibility doesn't translate into top performance, however. Some early adopters point to the Ectaco Jetbook, from Newegg, as one of the top performers — it remains the lowest priced unit with the broadest format support.
The early Jetbook model was hamstrung by built-in batteries, which have since been supplanted by standard batteries.
Any business traveler realizes that removable, replaceable, or rechargeable batteries are very, very important features. Other features to look for include: bright backlighting; easy zoom capability; a variety of fonts; and the ability to display text in both landscape (horizontal) and portrait (vertical) formats.
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