I kind of want to address one of the flaws with the HV20. I know this isn't big news but some people have problems with wobbling and others do not. I personally do not have any problems with it. The only time that I get a little wobble is when I move the camera in a very violently way and even then you can hardly notice it. I really want to stress the suggestion that you buy the camera from a place that will give you a refund or exchange it after you have opened it and tested it. Paying a little more from a place that will take it back will most likely pay off if the camera does have this problem. When you get it immediately test the camera. Do crazy motions, drive in your car, or whatever you can think of. Then watch it to make sure that it doesn't wobble at all or little enough to where you can live with it. I am not sure if Canon will correct this with the warranty.
Also, as far as the ghosting with 24p: It personally doesn't bother me that much. Maybe it's just me or my camera does it very little. But, mostly it's something you will only notice when you are trying to find it. I have noticed ghosting on film as well and to me it's just a good look as long as it's not too much.