Well according to the poll, I voted classic over concept because I have a strong dislike to the way most modern cars look.
That said, while I do appreciate old-school Detroit iron, my favorite cars are the imports that came in between the 70s and 80s. Like the Datsun 510 and 240Z, and just about every Civic and Accord hatch Honda has put out since they started making cars until about the year 2000.
Edit:
For some reason I didn't think to click the "Other" option on the poll. Ooops. 