I have thoroughly loved my Volvo S80.
Full disclosure:
I upgraded to this used car from an old Dodge Neon, so I would probably love anything.
The car is just smooth and it feels great on the highway and city streets. The audio system and heating/cooling system are both better than what I have in my house.
Pros:
Safe
Reliable
Not bad looking
Good deals on older cars
great handling
quiet on highway
roomy
looks good with roof rack
standard sound is great
Cons:
Sort of looks like a grandpa car
low beams are really low
stupid feature with the gas tank that doesn't let you close it automatically
can't open the trunk from inside the car