I voted Act I. I like Act II considerably, but not nearly as much as Act I. Relevant explanation from another thread:
[The Path That Divides is a] Really strong song. Definitely one of the highlights of Act II.
I also agree somewhat with Kev that Act II feels like it meanders a bit. And while there is plenty of original music, and the reprises are done very well and very creatively with nice twists and turns put on them, it does start to feel a bit like a re-hash of Act I from a musical perspective. That said, I do really like Act II, in case that wasn't clear. But although the album is already long enough, one thing I personally feel would have helped make Act II and the entire story even stronger and take it over the top, would be the inclusion of an additional song near the beginning. If I had been so privileged as to have the band ask for my creative input ( 
as if that would happen!), here is what I would have suggested: Create a song with almost entirely new riffs and melodies (i.e., no reprises or different versions of what we have already heard) that deals with the impending revolution from the two opposite but parallel perspectives: From the Ravenskill perspective, the militia are gearing up for war and conflict. They are hopeful, but afraid, and are preparing for devastating losses and bloodshed. Despite the inevitable loss of life, they see war as their only option, especially now that Naf' has given his 3-day ultimatum. On the GNEA side, despite that Naf' has agreed to meet at Heaven's Cove, he orders only a temporarily power-down of the NOMACS to appease Faythe, while secretly also issuing an order that the NOMACS will subsequently ramp up their activity and oppression, and the GNEA army will launch a series of pre-emptive strikes against the rebellion to stamp it out before it starts. Naf' is conflicted because part of him hopes that his meeting with Gabriel will go as Faythe hopes and will bring peace. But he is simultaneously making preparations for what he believes the more likely scenario--i.e., the meeting failing and ending in conflict that could be the initial spark of rebellion.
From a story-telling perspective, the above would up the ante a bit in terms of the tension of the story and the rebellion itself being more real. It would also help remind the listener that, although the main thrust of the story focuses on the interpersonal relationships of the main characters and how those relationships end up shaping history, the conflict is much bigger in scale and scope. From a musical perspective, having one more song that uses original motifs instead of reprising existing ones would help Act II feel stronger as its own entity. All in my humble opinion, of course.
There are basically four factors that went into the above: (1) Act II is shorter. This is not a problem in and of itself, but it just does make the album feel a imbalanced. Adding one song to Act II would help a bit. (2) Again, not that there is a lack of original material in Act II, but it can start to
feel like a musical re-hash. Some new riffs and melodies in an added track would help with that. (3) As others have noted, there really is a lack of exposition relating to the NOMACS. They really are "just there" and do not really feel menacing because we know so little about them. Similarly, but to a lesser degree, there is a lack of exposition on the troops and the threat of impending war in general. There are hints. Brother Can You Hear Me, and a few spots in other tracks touch on it. But a bit more depth would, IMO, help the story without taking away from the focus on the main characters and their relationships. (4) It would really up the emotional ante and add more much-needed tension to Act II.
EDIT: And I think something like that would fit well right after Moment of Betrayal.
Poll
Topic: The Astonishing Poll (Come on, you all knew this was coming...) [Act 1 vs Act 2] (Read 8084 times)