I generally go with epub. Epub files are the closer to a standardized format, whereas mobi is more proprietary.
The other reason I prefer epub is that it is, in essence, html docs in a zip file format. You can unzip <title>,epub get a listing of html files: $ unzip -v The_Great_Commission_-_Steven_Lake.epub Archive: The_Great_Commission_-_Steven_Lake.epub Length Method Size Cmpr Date Time CRC-32 Name -------- ------ ------- ---- ---------- ----- -------- ---- 5899 Defl:N 2562 57% 2011-07-28 15:19 73989fed Page_006.html 2815 Defl:N 1296 54% 2011-07-28 15:18 eefddff2 Page_007.html 3278 Defl:N 1502 54% 2011-07-28 15:22 27844f53 Page_008.html 2288 Defl:N 1135 50% 2011-07-28 15:20 3a4153c6 Page_009.html 4828 Defl:N 2087 57% 2011-07-28 15:17 f617d959 Page_010.html 3376 Defl:N 1578 53% 2011-07-28 15:20 72433d36 Page_011.html 4462 Defl:N 1882 58% 2011-07-28 15:20 b50530bd Page_012.html 8908 Defl:N 3714 58% 2011-07-28 15:17 a44eed3f Page_013.html 1471 Defl:N 785 47% 2011-07-28 15:12 666f52bd Page_014.html 827 Defl:N 485 41% 2011-07-28 15:12 1c2db05e Page_015.html 1932 Defl:N 419 78% 2010-05-05 19:41 f66060ca stylesheet.css 583 Defl:N 313 46% 2010-03-20 22:33 d755d124 titlepage.xhtml 3099 Defl:N 677 78% 2011-07-28 14:48 5b88fc45 toc.ncx 0 Stored 0 0% 2010-07-21 16:52 00000000 META-INF/ 237 Defl:N 152 36% 2010-03-20 22:33 7716e82e META-INF/container.xml 2978 Defl:N 754 75% 2011-07-28 14:45 01059abd content.opf 20 Stored 20 0% 2010-03-20 22:33 2cab616f mimetype 780 Defl:N 433 45% 2011-07-28 14:35 63e38c68 Page_000.html 1895 Defl:N 885 53% 2011-07-28 15:24 16c2203b Page_001.html 966 Defl:N 534 45% 2011-12-18 22:16 48efa850 Page_002.html 1678 Defl:N 880 48% 2011-07-28 14:55 e997672e Page_003.html 13051 Defl:N 5200 60% 2011-12-18 22:16 d0bb32bc Page_004.html 4698 Defl:N 2056 56% 2011-07-28 15:21 ba97913b Page_005.html 222915 Defl:N 215843 3% 2010-12-21 15:54 aed8cb8c cover.jpg -------- ------- --- ------- 292984 245192 16% 24 files These being .html files, can be edited. All that being said, are you familiar with Calibre (http://calibre-ebook.com)? It's an ebook library manager and converter. You should take a look at that, as it lets you convert between formats at will. It also makes a good library manager, though have had issues with multiple copies of the same database getting out of sync, so I may end up using subversion or git on the backend to keep them in sync. --b On Thu, Aug 2, 2012 at 12:40 AM, T o n g <mlist4sunt...@yahoo.com> wrote: > Hi, > > If I can choose, which version of ebook I should pick, > the epub or mobi files, and why? > > Thanks > > -- > Tong (remove underscore(s) to reply) > http://xpt.sourceforge.net/techdocs/ > http://xpt.sourceforge.net/tools/ > > > -- > To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org > with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org > Archive: http://lists.debian.org/jvd0b8$tdi$2...@dough.gmane.org > -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/CAKmZw+bt3Sn7OGsFvUgfyWm=ouwmhbrpuyfuniwfpagi-3p...@mail.gmail.com