My work camera is an XT. My personal camera is an XTi. The XTi has a system that eliminates dust on the sensor. The XT doesn't. There is dust on the sensor of the XT that ruins every photo. My friend also has an XT with dust on the sensor. It cost a lot to have the dust removed and it is going to come right back. I take my personal camera to work and only use the work camera in an emergency, I hate it so bad. My friend hates her XT for the same reason. It takes all the joy out of picture-taking to have every photo have globs of grey specks. Note: even the clone tool in photoshop doesn't help much on scales.