Is a canon rebel xs or canon rebel xsi better camera?

The Xsi was release a year after the Rebel XS and has a few extra features. For example, the Xsi is a 12 megapixel sensor while the xs has a 10.1 megapixel sensor. If you're looking to buy, you might consider a Canon Rebel T1i that was just released. This new camera is a bit more expensive but includes HD video.