I wouldn't worry about moire
Soren-
I wouldn't worry too much about moire. It's in the nature of digital camera CCD and CMOS sensors to produce it and it's always going to be a factor. The only exception are the Sigma digital SLRs and their Foveon sensors. I believe that they are moire-free. But for cameras that use CCD and CMOS sensors there will always be moire issues. It just depends on the types of subjects and patterns that appear in your photos. The manufacturer's solutuion is to use a stronger anti-aliasing filter. But that will soften the captured image. Better to choose a camera based on the system and the overall image quality then get distracted by one potential problem. Plus, if you do find that moire is a problem for you, there are software solutions. And those are probably better since you only use them when you need to.
I also agree with Sebastian that the D70 is currently the best camera in its class. Actually, I think it's in a class of its own. Not to knock the Digital Rebel, but the D70 is a real, full-featured body and the Digital Rebel is something of a sabotaged EOS 10D. So, consider the image quality, the functionality, and the system. Those are what you should be basing your decision on.