Chris 
2008 Nissan Altima Sedan 2.5 4dr Sedan (2.5L 4cyl 6M)
Great performance but terrible comfort
 My 2008 Nissan Altima 2.5s has a great engine and transmission compared to the Hondas, Hyundais and even Chevrolets that I have owned.  Nissan really has it down when it comes to their drive trains but I have never had front seats on any vehicle that I have ever owned, including my 1956 Chevrolet pickup, that were as uncomfortable as my Altima seats are.  After less than one hour of driving my rear end is more sore than it would be if I was riding my mountain bike.  The seats look good but they are so stiff and lack any kind of suspension what-so-ever.  I haven't tried fixing it yet but I think that I am going to try changing the foam cushioning in the seat bottom and see how it affects my bottom.  The window controls on the driver's side are also poorly positioned.  They are so far back on the door that I can't reach them without contorting my left arm to a crazy vertical position.  I've found it easier to reach across my body with my right arm to hit the switches.  The controls were ergonomically positioned for someone with very short arms.  Besides the uncomfortable front seats and the placement of the window controls I really like the car.  I get about 28 mpg around town and 37 mpg on the highway, it has great brakes and handles good for a midsize sedan.  I would recommend the purchase of an Altima except for the granite front seats and the position of the window controls.