I'd stay with the Altima ... why change? Altima's fit your description unless it's old/high mileage.

If not, new Altima/Maxima, also I know a few people with those Newer design Hyundai Sonata's and they have zero problems with them and you can get them around 15k out the door! 6 year 60k mile bumper to bumper and 10 year 100k mile restricted warranty.

If I was looking for a cheap and new daily driver with a comfortable ride, I'd definately get one of those new Sonata's.