The Nikon Coolpix S80 has a CCD sensor type which is better than the MOS sensor type found on most cameras of a similar age and type to it. 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.
A CCD sensor type is actually the best sensor type amongst all compact cameras that are a similar age to the Coolpix S80.
Amongst comparable types of camera the worst sensor type is MOS.
Other cameras that have a CCD sensor currently available that you might want to consider include the Nikon 30 ($440.49) which has better reviews.