I have a Pioneer DVR-103 that I got with the first shipments from Video Guys. I use it by making presentations in Premiere, exporting them as mpeg-2 movies and then using DVDit SE to prepare the menus etc and build and Prassi to burn onto DVD. I have been unsucessful even after upgrades to get DVDit to burn directly to DVD-R I find that I have to play back the whole DVD and sometimes a lone piece of music is missing from within the presentation. It will play it if played on a computer but not on a set top player.
I'm contemplating purchasing the 106 as I'm hoping this might alleviate many of my frustrations. For instance I burned a Data DVD-RW on the 103 and it burned fine but I couldn't access from the drive to make sure the data was on it, I had to go to my brand new Laptop to see the files.