Here's the best review I can give it:
The Jihad started with two extremely well-done, fantastic books. Then came JHS: 3072. Unfortunately, then also came JHS: 3076 and Terra. Each was progressively worse, and increased the silliness of Elmer Fudd villains for no discernible reason. Final Reckoning goes back to what made the start of this storyline strong. It hits hard, and doesn't let up. The opening fiction along is absolutely worth it. Also, seeing that the scariest people (and potentially most damaging) folks in the entire Jihad weren't the Blakists is kind of nice. (Thanks Regulans!)