Canon Powershot Sd850
What Canon PowerShot digital camera is better?

Canon PowerShot SD790IS 10MP Digital Camera with 3x Optical Image Stabilized Zoom or Canon PowerShot SD850 IS 8.0 MP Digital Elph Camera with 4x Optical Image Stabiliser Zoom

to be honest I do not see much difference between 8 and 10 MP unless you go to printing very large sizes. I'll take the 850 for the zoom personally. dpreview.com is available, which are very trustworthy reviews. Hope this helps.