The IXUS 162 has a better sensor type than most comparable spec cameras that have been available for more than a year. This camera has a CCD sensor type, whereas most Compact cameras that came out around the same time as it have a MOS sensor type. CCD sensors produce high quality, low-noise images but consume a lot more power than CMOS sensors. CCD is the most common image sensor type used in digital cameras.
This camera's sensor type (CCD) is actually the best sensor type across all cameras of this age and spec.
A MOS sensor type is the worst sensor type across similar types of camera.