I am thinking about buying a used Sony HVR-M10U VTR. This will be my first VTR, and, naturally, I know very little about these things. I cant seem to find reviews on this particular deck. Also, I have know idea what acceptable hours would be. The hours for this particular unit are as follows: OPERATION 174 X 10H DRUM RUN 19 X 10H TAPE RUN 16 X 10H THREADING 94 X 10 Help?