I'm definitely going to have to check it out and see, then. I have a 300 and am not entirely pleased with the size of the screen and usually have to up-size the font on anything I'm reading. If the size they use for AO3 is workable, I'll be thrilled to pieces.

I've dealt with the underlined chapters thing before and can say honestly that it doesn't bother me overly much. It might on another device, though.