Personally, I prefer taking the train in the Northeast Corridor but:<p>1. There is a regular train from EWR right into Penn Station<p>2. Even though the train is more convenient in a number of ways, flying can get me from Boston into Manhattan earlier in the day than the train. Usually doesn&#x27;t matter, but it may if you have a morning meeting and can&#x27;t come down the previous night.<p>3. Although I&#x27;ve taken it, the Acela all the way from Boston to DC starts to not make sense vs. flying--and tends to cost more as well.