Hi Flipje.
Sorry, I can't answer your question, but I'm thinking of buying a DV-4610, and I have some questions for you.
How does it handle DivX, Xvid (packed bitstream) and MpegISO on dvd?
And does it support .sub or .idx subtitles?
I am familiar with this DVD player and unlike Marantz recent models, it is not a remote control modification.
This needs a CD Rom programme and some button presses, but will play all regions with no further hassle.
Most shops selling Marantz will know how to do this or will be able to get the disc.