I have a 2005 base model Impala with 210k miles on it. Ive only had 3problems with it. A fuel pressure regulator ($50), Catalytic Converter ($250) and my cruise control hasn't worked in approx 3 weeks.
I own 2 other vehicles a expedition and a 2011 convertible Camaro SS with all the bells and whistles imaginable. This may sound a bit nuts, but I prefer the Impala, the ride is so much more comfortable not to mention 29mpg. I drive it everyday it hasn't given me any problems (its well maintained) and i expect to last at least another 130k.
If you had problems with this vehicle, you probably didn't care for it as well as you could have.