Camera shopping...which way to go?

Lately, I have been looking into buying a new camera; actually, I'm always looking into buying a new camera. Seems like each time I purchase one, I upgrade slightly from the last. But I haven't yet splurged and bought one of the SLR cameras that I've had my eye on for longer than I can remember. However, I was asked recently if I could take some head shots for a website I am working on. I'd say my camera is above average for a point and shoot, but not sure I would trust its professionalism in this situation. Of course I took to the web to do some research, and came across an article specifically aimed towards graphic designers that asks the readers to recommend their camera of choice. I have been considering the Canon EOS Rebel since way back when they first came out; however, some also suggest Lumix, and I do like the idea of a smaller camera that still takes high quality photos. I will continue to ponder my options some more, and if interested you can read the short article and its reader replies here. And please feel free to leave a comment or shoot me an email with your own recommendations - I'd love the feedback!