I have a 2011 Accord LX-P, which I bought certified used from a Honda dealer, and have owned it about a month. I love it so far. In researching the Accord, I came across a few common complaints:
Road noise- I have not found this to be an issue. It is not quiet like a Buick or Lexus, but then again it's meant to have a sportier feel. Different tires may improve this, as well as more insulation- my car has no trunk lid liner, for example. I am typically listening to the radio anyway, but do not have to turn it up to hear it over the road noise.
Seat comfort- The seats are firm, not soft and squishy. Coming out of an older Mercedes, I appreciate the firmness.
Styling- Totally subjective. I strongly considered the Sonata, though, with its more aggressive styling. I decided I liked the Accord's look better, and think it will hold up better over time. Ever notice how the new (2013-) Accords look kind of like the 98-02 models? Honda keeps the Accord styling conservative, which I think is a key to its long-term success.
Overall, the Accord had all the features I was looking for: roomy, fuel efficient, fun to drive, and reliable. It also was one of the few certified used sedans in my price range that had not been a former rental car. I liked the Mazda 6 a lot, for example, but couldn't find a 2-3 year old one that had not been a rental. I also considered the Hyundai Sonata, which had a few more tech features such as Bluetooth and a trip computer. I liked the Accord's steering feel better, as it is still hydraulic and not electric, and the Accord's cabin seemed to have better outward visibility. I do miss having an outside temp display- not sure why Honda decided to omit this, but I can use my phone if I really need to know the temperature.