Both are central for buses (sometimes crowded) trains (regular, cheap and efficient), and jet ferries (cheap and fast to Naples).
Sorrento is great for an evening wander or a cheap supermarket (beware siesta time). Both great for visits to Pompei and Herculaneum on the train.
The scooters looks wild at first site but they are MUCH better drivers than us in the UK. They expect you to walk out in front of them and rarely get irate.
Catch a train to Castel le Marre for cable car to mountain walk or a boat from Sorrento to the Amalfi Coast destinations and Capri.
Don't bother hiring a car - met two couples who had taken them back.
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