Buying Cars?

I want to sell my Chrysler New Yorker for around 1,600 and its in good condition i just want something different this may sound dumb but my two dream cars are a 1994 cadillac deville and a 1984 lincoln town car wich one would you suggest and pretend they were both brand new with 0 miles wich ones better and i woul dlike to get one of these but is the gas mileage as bad as people say because my car gets 24 miles to the gallon now and it doesnt seem too bad