While you were in the area, did you visit the 'Villa Poppea' at Oplontis? I would urge anyone visiting the Pompeii/Herculaneum area to allow time in their itinerary to visit, even if you have to forego the statuary trip up the volcano. One word of warning, you have to walk through quite a rough looking area from the car park to the villa, so watch your valuables.
I did not. I took the Circumvesuviana back and forth from Sorrento to Naples, but I do think that Opilontis is a stop on the route. So is the neighborhood more "rough looking" than Ercolano? I know that the posts I read prior to my trip said to stay on the main street that leads to Herculaneum, so I complied.
I did not make it to Stabiae either. Just not enough time.