The Sony H55 and HX5V
Identical except the HX5W has GPS (global positioning system) and HD-1920 x 1080 video.
H55 is 14 maegapixel CCD sensor
HX5W has 10 megapixel CMOS sensor
The Panasonic TZ8/ZS5 and TZ10/ZS7
Identical except the ZS7 has GPS, a HDMI socket, larger LCD with more pixels.
The Samsung WB600/HZ230W and WB650/HZ35W
Identical except the WB650 has GPS and better LCD
For comparisons I suggest you use:
Which is better?
Owners of those cameras rate the Sony and Panasonic about even.
Owners rate the Samsung just a bit lower.
Which one is better? The most important thing for me is image and video quality!
And one more question: What is the differences between: HX5V vs H55
TZ10 vs TZ8
WB650 vs WB600