I'm wouldn't have voted, because I don't think it makes much sense to ask, in essence, "Which is more dramatically effective, an opera by an inexperienced opera composer, or an opera by an experienced opera composer?" It's pretty obvious to me that, simply as stage works, any one of Mozart's "big" operas is superior to Beethoven's FIDELIO -- and that Beethoven was much less concerned with what would "work" theatrically than with making moral points about freedom vs. tyranny, etc. Surely FIDELIO is superb by any purely musical standards, but if opera is theatre then I think you have to take into account that FIDELIO is dramaturgically rather unwieldy and more of a challenge to direct than, say, LE NOZZE DI FIGARO. But make no mistake, I love FIDELIO and Beethoven is probably my favorite composer who didn't regularly write operas.