My personal favorites are With Stars Underfoot, Changeling, Pilot of Korval, Veil of the Dancer in that order. I too reread all of them, as I do the books, from time to time and enjoy them all immensely.

The people that I've tried to use chapbooks for the "hook" into the Liaden universe found them too "insiderish" for lack of a better word. But for all of them, when I loaned/gave PIN they were well and truly hooked and are now all caught up and eagerly awaiting Ghost Ship.