Business travel between Washington, DC and New York City

[bdk3clash]

Over dim sum TheDaveR (nee sfer) and I engaged in a heated debate over the respective benefits of flying versus taking the train between Washington, DC and New York city.

Specifically, Dave mentioned the greatness of the Delta shuttle service, which takes off every half-hour. I countered with Amtrak Acela Express service, which runs every hour. (Let's assume that since this is business travel price isn't an issue.)

Which is better? I voted train since door to door I think your total travel time will likely be shorter than flying, given that both cities' train stations are very centrally located, while LaGuardia (and to a greater extent, JFK) in New York and Dulles/Reagan (and, god forbid, BWI) are relatively far out from their respective city centers, a problem which can be exacerbated by traffic.

Comments?