Interesting question. I was signed up to visit both sites. Had an amazing small group guided tour of Pompeii. Hope to go again to see the additional discoveries. Will never forget the thermopolia, Pompeii's fast food stands.
My tour of Herculaneum was canceled. I seem to recall it was due to not enough people signed up. I was sorely disappointed to miss it.
Some of my fav photos:
Pompeii Thermopoleum, fast food stand
Mt. Vesuvius background, Pompeii
Pompeii bath
Pompeii basilica (city hall)