If I have to be looking at a screen for hours, I really like using my Kindle. I also really like formatting to remove everything but the text—even the references (Accordance is fantastic for this).
So Accordance can't export to Kindle for reasons outside of their control—the publishers and copyrights. But I set up a two part process that works really well for me.
1) I created a workspace with the text formatted just right for the Kindle. For me this is size 24. Anytime I want to send something off to the Kindle I just open this up.
2) I created an automator printing plug in. You have to put your send to kindle email address into the workflow. But then you can just print, go to the print to pdf menu and chose this extension. The computer takes care of the rest and you just open it up on your Kindle.
I really love this, particularly for breezing through a biblical book. And setting it up this way removes the nuisance part of the process. Let me know if you think of ways to improve the automator extension.