This is more a comic/graphic novel than a proper Trek novel, but I think Lower Decks: Warp Your Own Way is possibly the best Star Trek comic I’ve ever read.

It stays true to the source material, and unlike a lot of IDW stuff I’ve read, doesn’t completely shark jump from the source material in an attempt to be mysterious, cool, or interesting just for the heck of it.

Probably the only other piece of IDW Trek I enjoyed this much was the TNG Mirror Universe, which did really well to achieve a “keep me on the edge of my seat” feeling.

I still need to read some other Trek comics, though, especially the TNG/Doctor Who crossover, which a local library branch of mine has. I also have a ton of PDFs from the recent Humble Bundle to burn through.