I will be using a firewire to connect the camera to my pc. |
Newbie or not, you clearly know what you're doing
The quality is in the data that is recorded to the MiniDV tape. Unless there's actually a faulty mechanism or "dirty" tape heads (in which case you'll get nothing or some frames dropped) there will be absolutely no difference in quality. In fact its a good idea to use an old camera for the express purpose of reviewing/capturing in order to reduce wear on the mechanism on your "main" camera. I recently bought a non-working (as in the sensor had broken so it couldn't film) camera on eBay for £13 for this purpose. It had the bonus of DV-in so I can record back to tape as well.
BTW it may be stating the obvious, but MiniDV tapes recorded in HDV will NOT play back on SD models.