I am purchasing a digital camera for my girlfriend this Christmas. I narrowed it down to 5 digital cameras. She's also seen and felt each of these and loved all 5. So that didn't help lol. So from the 5 below, which one is most recommended? (Note: It would be used as a point and shoot camera during the day and night)

Canon SD1000 ($180)
Canon SD750 ($238)
Nikon Coolpix S51 ($200)
Sony DSC-T70 ($245)
Sony DSC-W90 ($220)

The Canon's come with a FREE 1GB Card.