Nothing too complex. I need a few custom paragraph styles, and here and there a graph or diagram will be interspersed with the text.
I've looked at Scribus, and it seemed suited for my needs... only it runs quite slow, and it's crashed once. I fear it will start crashing / slugging on me halfway through my work. It's not very good at handling lots of text either.
I've also considered LaTex, which I'm only barely comfortable with; but I'm definitely not trusting myself with LaTexing a whole book. I've tried LyX, but found it nowhere near as intuitive as others have.
Really, all I need is something that's a step above Pages and allows for a bit more customization and and easier time working with paragraph styles and graphics.
I am currently writing the book in HTML, broken up into separate files, using some custom tags which I hope the software could be made to read as paragraph styles (it can be done in Scribus via HTML_custom-tag).
It would be good if I was able to import said HTML text directly into the program.