I got a LTS as soon as they were available because it is Star Trek and I knew that Cryptic makes good-looking games (I love their character creation options here and in CO!).
I'll admit I did not cop to my friends right away that I got a LTS (several of them had gotten burned on LTS in other franchises and I didn't want them giving me the "poor naive *******" look), but in retrospect it was a great decision (it's paid for itself pretty much by now so it's gravy from here-on).
As for getting one now, I can't really advise one way or the other. If you like the look of the game, make some friends ingame, and enjoy just being "in Star Trek" it's probably the way to go.