Chevrolet's front-wheel-drive Impala brings a classically comfortable ride and big value to the table, but the 2011 model can't compete with the likes of the Ford Taurus, Toyota Avalon or Hyundai Azera in refinement.
In fairness to Chevy, I think the 2011 Impala has features of its own, and it would be unfair to compare it to Avalon. Perhaps, if compared to Hyundai's Azera, the comparison would be close.