stthomas2004 wrote in post #5758282
Whats the biggest difference in a 30d, a 40d, and a rebel?
Well, there are 3 different rebels out at the moment, but there are lots of differences. I would recommend reading dpreview and using the comparison tool to see. The rebel line and the XXD line are pretty different, the XXD's are bigger, have a tougher build, and more controls on the camera, as well as a better focusing system, viewfinder, burst speed, and other specs. That is not to say that the rebels aren't great cameras, they are, it just depends on what your priorities are. The XSI for instance has the most megapixels between all the models(rebel and XXD) now as well as the most advanced live-view. It also uses SD cards. However, you do pay a premium for it as it is canon's newest model. It also has a viewfinder that is bigger than the other rebels, but not as bright as the XXD series.
There is a lot to consider. I would recommend reading through the reviews (dpreview.com as well as others). You will need to consider what is important to you, as well as your budget. I also recommend going to a store to try them out. You may feel the rebel line is just too small or that the XXD line is just too big and heavy.
I wouldn't feel comfortable recommending one over another until I understood a little better what you are looking for. read the reviews and comparisons, then come back here if you have any questions.