While my fondest Trek novel memories are from TOS, my enthusiam for new generic TOS (for lack of a better term) books is very low. The planet-of-the-week-all-toys-back-in-box formula been done to death, pretty much.
That said, I can't disagree more with
Ktrek. For the most part, I've loved the 24th century stuff that's come out over the past couple of years.