For all the information you could ever want to know about how the new 300D/Digital Rebel compares to the other DSLRs that are out there just go check out photo.net. There is a full review of the body, plus lots of discussion about it in the forums.

Your second question, about whether or not to switch to digital, is not a question that we can answer for you, especially with the amount of information that you gave us. Both film and digital have their respective advantages. Both will continue to exist for quite some time. For a well thought out examination of film and digital photography, see Ken Rockwell's article on the subject.

What most people don't realize is that digital and film have been working together quite well for some time now and that the digital revolution has already made a huge impact in the printing phase. Lightjet and Chromira machines enable the highest quality prints and Fuji Frontier machines create good quality prints quickly. The quality of these prints is not just the resolution, but the color reproduction and tonality as well.

What it all comes down to, though, is not the equipment. You have to be in the right place when the light happens. Mastering light is far more important than having a certain kind of camera.