[Ken Maltby]

It's been my experience that the JBL does a pretty good job with all the formats
that it can work with, within its limitations. It can't, as of yet, handle a few of the
features its hardware could support, if the firmware reader program were to be made
to implement them. So some things like internal link support are not generally available
even if the format includes it. The basic ability to read the text of the listed formats
is there though.

It is also often quite possible to work around most of the limitations that sometimes
prevent, or delay, a particular ebook's display/loading. ( For instance I ended up using
"mobi2HTML.exe" to get a 23MB .mobi file to load and display properly on the JBL.)

"Best Format" is even more subjective than "Best Rechargeable Battery". I usually
like the job Calibre does (using the "Jetbook 5-inch" output profile) converting my old
Palm .pdb ebooks to .epub. I prefer the wider spacing of these .epub, some like the
tighter spacing of the .pdb.

Ectaco recomends .txt as the most compatible format for the JBL. I've had little trouble
getting an ebook in any of the listed formats to be readable on the JBL. I may have had
to convert a troublesome case into a different listed format, but that is easily, and quickly
done with Calibre. In the vast majority of cases the ebook will be readable, without any
adjustment being required.

Luck;
Ken