Audi A4. You can def get a model 3 years old for low 20s. Very good car and AWD. Chicks dig Audis too.
EDIT: more info...
http://www.kbb.com/KBB/UsedCars/PricingR...QuizConditions=
P.S. car dealers buy under 'good condition' no matter what condition the car is. If you want a deal on the car, you will have to pay about 1k above trade-in or 5%, whichever is more.
