If it does have a Duratec, definitely go for it. I had a rental Taurus SES w/ Duratec that we drove from Buffalo to Toronto and back, plus a separate trip from Toronto to Hamilton & back in there too, so figure about 6 hours of highway driving over weekend. It was pretty fast, quiet, and a comfortable ride, even with five people in the car. I did a fair amount of 80mph+ running with it and it was good.
The Taurus I rented another time that was similar, but with a Vulcan V6, pulled me around well enough but it just didn't feel as refined.
