you've missunderstood what i ment by shaking, i wasnt talking bout the camera shaking or being damaged etc, i was talking about the picture, obvioulsy the more you move around the more shakey it will be and also the background changes much more often which is all bad for video compression.
Now if you take a whole 60 min tape on your camera and try to transfer it to your computer with a firewire cable(minidv connector) it will take up approx 13gb of space(in full quality), now if you want to shrink that using div-x or similar codec for archiving you get pixel blocking because there are too many changes in the video from frame to frame for encoding to work correctly. Therefore you are left with unfeasibly large videos or really crap quality ones that you wouldnt want to put on youtube anyway.
Now if your compression is part of the device you do not have this issue hence the advantage of the sd recorders and you will have reasonable sized files.
If however you only want to play from the dv camera streight to a tv or are happy buying massive hard drives and just showing the videos to people at your home then go for the dv route otherwise stick with sd recorder(or hd doesnt really matter)