Characteristics of Sony Cyber-shot DSC-W150 over DSC-W130 & DSC-S780 :

2.7″ Large Screen
Maximum Optical zoom 5x
Fastest shutter speed & Maximum ISO
Better LCD quality with more pixles
Latest among all three
Contains optical Viewfinder
Presence of Macro shooting mode & Face detection
More Image modes

Conclusion:
DSC-W150 is the latest model with better features among all three camera thus making it more attractive. More >