Ok, then I think they are both equally annoying.
Well, probably the rapture debate bothers me more, because so many people have been deluded into believing in this fake rapture. I really don't care about the Sabbath discussion, I think people should use their own conscience and study the Bible and celebrate the Lord's Day or the Sabbath or both as they see fit.
In the end, I don't believe anyone is going to "lose" their salvation over eschatology OR the Sabbath, so why are we spending so much time discussing them, anyway? Of course, that is because I believe our relationship with Jesus Christ determines whether we are saved or not, not theology! Which is not to say that I don't use theology, read theology, study theology and apply it to my life in so many ways.
As one of my fellow students in Seminary said when I told him about a denomination I formerly attended that stated in their doctrinal statement that you are a heretic if you do not believe in a pre-trib, pre-Millennial rapture, "You are a heretic for a guess?" That really summed it up for me!