Which one wins out? That's a tough one. I got to say though, at least Lost In Space had Dr. Zachary Smith.
* Fortunately, and I think this is mainly due to the timing of the original series, there was no exorcism scene like there was in The Next Generation series.
ST wins out, as it had a fixed, serious purpose and held to it from start to finish, while LiS began as a fantasy/survival series, but turned into a semi-farce before the end of season one. Only on rare occasions would a serious script find its way on Allen's desk (ex. season three's "The Anti-Matter Man"
), but the Smith v. Robot routine wore thin---at the expense of the other actors.
The Jupiter 2
miniature was a cool spin on the traditional flying saucer, but if I was looking for a serious mix of sci-fi drama and adventure, LiS lost to ST every time.