The Sony A55 has the best APS-C sensor (says DxOmark)
DxOmark tested the 14 Megapixel (A33) and 16 Megapixels (A55) sensor and surprise surprise…the A55 has the best APS-C sensor ever tested on DxO. Look at the following sensor ranking graph: http://dxomark.com/index.php/en/Camera-Sensor/Sensor-rankings.
It beats all Canon APS-C cameras and only the Nikon D90 is as good as the A55.
The real fun with DxoMark tests is that you can easily compare the cameras like here for example: A55 vs D90 vs 7D (click here to see the comparison).
Reminder: The A55 is in Stock at Amazon US, Sonystyle, Pixmania Deutschland, Pixmania Belgium, Pixmania Austria, Pixmania UK, Pixmania Holland, Pixmania Poland, Pixmania Italia, Pixmania Suisse, Pixmania Spain, Pixmania France.