Thanks for the precious info. I'd already bought the casio one as my mom's b-day gift, but scolded by my younger sister (who knows how to take photo with manual camera, like you all here) that the camera is awful! Oh well..... I think that stlyish-slim red-colored camera is good enough for my mom's daily use.
For myself, still looking for a DC/video-cam, but NOT urgent.... so will wait and see the advice below Thanks!!