The most Star Trek novel I have read is The Return by William Shatner
, it is in my top 10 list next to Destiny triology, and the Typhon Pact duology by David R. GeorgeIII, and Star Trek Voyager: Full Circle.
Even though Star Trek:The Return was not exactly canon with normal trek time line i've always wished this book was made into a movie. It is one of my top favorite star trek reads.