Samsung Digimax A55W vs Casio EXILIM EX-Z600 cameras ratings
It is preferable more 2.7" screen size on Casio EXILIM EX-Z600 than 2.5" screen size on Samsung Digimax A55W.
Casio EXILIM EX-Z600 has nicer quality pictures (6Mpix). Samsung Digimax A55W has 5Mpix, so it makes less details.
Optical zoom at Samsung Digimax A55W is 4.8x. Optical zoom at Casio EXILIM EX-Z600 is 3x (which is obviously lower).