The real problem with lying ... here (context is important) ... is complex. In the first place, "lying" in this game is much more "grey" than "black-or-white". Yet once you are perceived as a "liar", the response is more "black-or-white" than "grey". So no matter how you shave it ... once you push your misdirection, ambiguity, etc. too far, it is hard to recover.
In the second place, there are several topics within which "lying" can happen. You can lie about what you are considering (at least by implying that you are more open to a course of action than you really are), lie about what you are going to do, lie about why you did something, lie about what someone else told you they would do, lie (especially by omission) about what you think someone else might do, etc. Some of these are much harder to "prove" than others. More to the point, though, they are also much harder to *dis*prove if you are accused.
A lot of "what is best" really has to do with the accumulated expectations of the other six players in that particular game. If you can figure that out in time to affect your own strategy, that should work.