I would say (obviously) that the best choice is the Accord. Why? For me, it is all in the details - the little details that add up to make a satisfyingly cohesive whole.
Firstly, I find the interior of the Accord of much higher quality than the Camry or Altima. The environment of tactile satisfaction is a huge plus for me - it took me owning a Scion and a Toyota to make me realize how important that was to me - and it pushed me back into the Honda dealership.
Secondly, the more I drive my Accord the more I enjoy and appreciate it. With other vehicles that I have purchased, I have found the opposite true as the reality of owning the vehicle fails to live up to the promise. Yesterday, I was coming home from a shopping excursion in heavy rainfall (what...rain? Oh yah, it's Seattle..) and found the Accord incredibly serene and secure on the wet pavement. I could tell exactly what the wheels were doing. It's just another surprise that has kept me happy.
Lastly, I find that Accords are classy - particlarly EX-L V6 models. I have found that many extremely wealthy people choose to drive this vehicle over spending lots more for (at best) a marginally better car.
Anyway, those are my two cents for why the Accord is the best choice. Whatever car you think will make you happiest...probably will. Good luck!
