I would like to own the Canon HV20 because it's affordable, supports high definition video and has a pretty big 1/2.7 inch imager. I've downloaded high definition videos captured with this camera; they are stunning and far above 'broadcast quality'. It even has some professional features such as zebras, adjustable sharpness, and a true progressive 24p mode. Downside to this camera: its exposure, gain, and frame-rate are difficult to control.
If I must buy a professional HDV camcorder, it will be the Canon XH A1 1/3 inch 3CCD Camera. It has better low light performance than the HV30 and a lot of professional features I've never used. It's funny how filmmakers can get away with using consumer cameras because they are in full control of lighting while videographers need to use professional cameras due to their superior low light performance.