You are buying into a SYSTEM, not just a single camera body. The investment in lenses over time is more than the camera body. Who has what you want? If price and a single body/lens combination is all that is important, look at the Pentax - its the cheapest digital SLR and is still a good camera.
What system do you plan to own in the future? WIth a DSLR the lenses and accessories will most likely work with newer models. There is probably little else to think about but this.