hi,
there's nothing really much to say about every point and shoot camera. all PnS is built for ease of use and portability and brings out decent quality photos. that's why its called point and shoot. you turn it on, point and shoot and these cameras already give you decent IQ. I noticed that PnS IQ goes down as the camera gets smaller.

with PnS, its all about knowing the limits of your camera and working your way with or around it. Slow flash recycle, Poor low light performance, shutter lag and so many more. But if you learn to work your way around these negative points then you should be able to produce good IQ images.
if you want a really good point and shoot camera, go for the powershot sx10 IS, sx1 IS or the sx20 IS or go for G9, G10 or G11, which ever you can afford. but then you trade of its portability for image quality with these series. its bulky compared to what you have but they produce the best images for point and shoot cameras under canon line up.
I'm quite happy with the IQ of my Powershot A710 IS, although nothing compared to any dSLR even with just a kit lens.