This is gonna be hard...I personally wanted 550 in this, but anyways...
367 is a great character piece for Elen, and is where he begins to define himself as more than a bard, but I feel it lacks the impact of other scenes.
464 is a good piece, and is a possibility
763 is another characterisation for Elen, but similarly to 367, I won't vote for it.
830 is possibly the great reveal for Redcloaks scheming, and is a powerful piece

I just noticed that these were all essentially conversations between two people..hmm.

Anyway, my choice in this final is 464