The Nikon Coolpix A300 has a CCD sensor type which is better than most compact cameras that are a similar age to it. Most similar spec cameras that have been on the market for 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.
A CCD sensor type is actually the best sensor type across all compact cameras that have been around for the last year.
The worst sensor type across comparable types of digital camera is MOS.