I'm also reviewing the edition, and not the author himself: that's a job for the literary critics.
Formally, this edition has many good features: the font size is just right, not too common in cheap editions for 800-page tomes; the notes are very helpful; and succint introductions are supplied.
It doesn't get 5 starts for a minor flaw in the content. A very good surprise was that it contains the whole of Don Juan, arguably Byron's masterpiece. However, I can't disguise my disappointment at not finding two of Byron's most famous short poems, "So we'll go no more a-roving" and the superb "She walks in beauty".
Overall, a fairly good edition. Byron is a must in any library, and this book fills the gap in the Romantic period shelf neatly.