Having poked through a few of them already, I'd suggest just putting a space in between people talking, or between your characters having different thoughts. Fairly standard writing convention, and would make my low-res eyes have an easier time. Also keeps the flow together, since I'm guessing that's what you're going for with pre-seperated paragraphs.
I personally like seperate lines for speech (which you might have noticed if you ever saw any of my crap on the cata forums), so it would look like
But that's the way I like to write, not necessarily the way I like to/have to read. Fairly sure it's bad technical form, too. It just makes formatting for my sorts of stories simpler in my head when I'm writting them.