I thing there's som big differences between them, becouse when I looked to those properties I noted that ku990 is match better!! but the strange thing that the diffrence in the price was onle 7 dollars!!!
I want to know to, ive heared pepole say that with ku990i theres no autofocus, other pepole have said that the ku990i has better face recognicion, other pepole have said that the ku990i has a updated software , but the ku990i dosent come with usb cable or stylus, but you can buy them of ebay or amazon...
KU990 has better optics and flash. The KU990i comes with these parts with less quality. Flightmode is in the KU990i and not the KU990. And the image stabilizer thing (as mentioned before).