If you would like a v6 with good gas mileage the c320 is a nice car. If you would like a all wheel drive a 2001 or 2002 e320 4matic or my favorite (if gas mileage is not a big deal) the e430 4matic with a v8. These older 210 chassis cars are getting cheaper and seem to have less problems as they age. The problem is they are getting to look a little dated. I agree with staying away from the 4 cylinder MB cars. I have never been a fan of the Audi engines or there cars for that matter, just a personal opinion.