I don't know for sure how JN feels about them.
I seem to recall they are not as sharp looking as the DVD-9's. But I had some playback issues with the DVD-9's (major issues on my PC, minor on my standalone player) so I had to use the DVD-5's for the cutlists. The problem seemed to be bitrate related, which has been corrected on the v2 DVD-9 of AOTF. It is supposed to be fixed for the other DVD-9's too, once those are available.
Incidentally I will have an updated cutlist up for v2 of AOTF at some point in the near future. There are a few very minor changes to the actual edit.