Also not ranked, but there are the ones that pop into my head as Trek books I loved enough that I have re-read them, or eventually will do so, just for the pleasure:
STTNG: Metamorphosis -Jean Lorrah
STTNG: Survivors - Jean Lorrah
Imzadi - Peter David
The Lives of Dax - ed. Marco Palmieri
Pathways and Mosaic - Jeri Taylor (I tend to think of these as one big book, even though they're not)
Not sure about Triangle: Imzadi II -- will have to re-read to check whether it makes my personal "hall of fame"!
I still need to read A Stitch in Time, and I strongly suspect it will become one of my favorites.
STTNG: Metamorphosis -Jean Lorrah
STTNG: Survivors - Jean Lorrah
Imzadi - Peter David
The Lives of Dax - ed. Marco Palmieri
Pathways and Mosaic - Jeri Taylor (I tend to think of these as one big book, even though they're not)
Not sure about Triangle: Imzadi II -- will have to re-read to check whether it makes my personal "hall of fame"!
I still need to read A Stitch in Time, and I strongly suspect it will become one of my favorites.