Hm, looks like only the 9500 had EDIT mode of the NTSC ones. On the PAL versions at least the 7500 and 8500 do as well (though not the non-SVHS decks from the lineup.) On the other hand PAL models didn't get video stabilizer until much later.
All of these JVC SVHS decks have digital/Y/C board, but I'm not sure if the 2D one in the cheaper models any extra NR like the 3D Y/C/TBC in the top of the line ones. There is analog noise reduction in any case.