canon a70 /olympus c350/nikon 3100 more value for $600?

[pnac]

Olympus C-350 Zoom
3.2 Megapixels • 3X Optical Zoom • 3.3X Digital Zoom • 1.8" LCD • Movie recording • Uses AA batteries

FREE Olympus 128Mb xD Card!
FREE Case!

xD is so X!

Nikon Coolpix 3100
3.2 Megapixels • 3X Optical Zoom • 4X Digital Zoom • 1.5" LCD • Movie recording • Small & compact • Uses 2 x AA batteries

FREE 256Mb CF Card!
FREE Case!

Canon PowerShot A70
3.2 Megapixels • 3x Optical Zoom • Up to 3.2x Digital Zoom • 1.5" LCD • Movie recording with sound • DIGIC processor • Operates on AA batteries

Purchase 128Mb CF Card at SGD$55 or 256Mb CF Card at SGD$95!
SGD501.00

most of them R abt same specs. 3.2megapixels.
2 of those haf free gifts!
buying from http://www.bargaincity.com.sg
or where is better?

thx!