Passing For Normal

For those of you who are up to date with the series: I've been reading (or, more accurately, listening to the audiobooks) in the Wikipedia internal chronological order, and I've just finished Diplomatic Immunity. By publication date, Cryoburn is next, but Wikipedia says that Captain Vorpatril's Alliance is next in the internal chronology.

Which would y'all recommend I read next, and which last?

BTW, as much as I like and enjoy Miles -- which is to say, a really whole lot -- my heart will always, always belong to Aral and Cordelia. I also have major weaknesses for Simon Illyan and Gregor Vorbarra. (I have a type, yes. It would seem that I do.)