Fantastic Four Visionaries: John Byrne, Vol. 4 contains Fantastic Four 258-267, Alpha Flight #4, and The Thing #10, all concocted by John Byrne.
The Fantastic Four battle Doctor Doom and Terrax, Reed goes on trial for saving the life of Galactus, Reed and Sue move to Connecticut, Thing and Torch battle the Messiah, The Thing leaves and is replaced by She Hulk, and Sue Richards has a miscarriage.
With the fourth volume, John Byrne shows no signs of slowing down. The best story by far was the Trial of Reed Richards, when the Shi'Ar and survivors from worlds destroyed by Galactus put Reed Richards on trial for saving Galactus' life.
The biggest thing to come out of this volume is She Hulk taking The Thing's spot. Honestly, that's pretty much the only significant deviation from ground already trod upon multiple times by Lee and Kirby. I think Byrne does a great job on the Fantastic Four but it would be nice if he broke some new ground. From the time and characters, it doesn't get much better than this, however. Four out of five fantastic stars.