Phoronix posted a review on the ATI Linux drivers
As 2005 comes to an end, both NVIDIA and ATI have both fought a competitive battle not only when it comes to their hardware lineup but also display drivers for alternative operating systems. When discussing this subject matter, GNU/Linux users have been quick to criticize ATI Technologies whether it is due to poor installation support, distribution compatibility, rudimentary control panel, or simply the performance level of its drivers. On the contrary, even though NVIDIA had unveiled its GeForce 7 series, 2005 has not been the best year for the green developers...ATI AYiR 2005