What must be?: A poll on the topic of our old friend, Ludwig Van

So, I must confess that there are string quartets out there that bore me to tears.  However, as I type this, I'm listening to Beethoven's string quartet No. 16 in F, Opus 135, and it does not bore me to tears.  It's too much fun.
And now, stand back, because I'm going to tell you why.  :o)
At the top of the score of the last movement of this quartet, Beethoven wrote the words "The Difficult Decision" (except he wrote them in German).  Then, he wrote the words, "Muß es sein?"  ("Must it be?").  The