While watching these videos, I thought about the question "which is the best space game ever". I think the answer is simple: there is no answer. All of them have their strengths and weaknesses and, as if the makers have made some hidden agreements, all of them seem to fill a certain niche that others lack. So none of them is perfect, but that wasn't the question, and so far no space game (and in this respect possibly no game at all) has ever been and most likely ever will be perfect.
At the risk of sounding a bit trite and clichéd, it comes down to personal preference and which of the games YOU like best. But I'm sure such banalities don't even need to be mentioned, right?