JVC has "Digipure" circuits, and LSI chip has NR and chroma correction too.
Auto features, nothing for you to mess with.
AVT-8710 is not for "cleaning" really, TBC is for the signal alone.
See this:
http://www.tvpreservation.com/cartoo...p?TOPIC_ID=991
Although it can clean sometimes as a side effect, maybe.
Although the 8710 does have minor proc amp controls for color, can be nifty.
No idea on the HDD editing. I hate DVD recorder editing, it's a bit sloppy. I prefer to dump the MPEG files on the computer and edit quickyly, fix anything if needed (audio or video work) and then make new menus. Cannot do that on the recorder.