>   http://z-m-l.com

Well, if “the proof is in the pudding” then I invite the other readers to compare the z.m.l results for “Scrooge” at:

http://www.z-m-l.com/go/vlconvert.html

to the PG TEI results for “My Antonia” at:

http://www.gutenberg.org/files/19810/19810-pdf.pdf

However, I will point out that neither markup has the proper support necessary to render correct EPUB nor MOBI file formats.