I loaded up a large Movie Maker undertaking [details are at the end], and ran
it through DVD Maker in order to compare the process and the final product
against discs created using MyDVD.

The process is much simpler with DVD Maker. When using MyDVD I have to start
in Movie Maker and publish each of the projects, then I have to read each of
these into MyDVD and burn the disc. The publishing step in Movie Maker is
painful, as there is no way to batch process the projects (this is doubly
painful if you wish to make both PAL and NTSC discs). When using DVD maker
you read the Movie Maker projects in directly, and proceed to burning the
disc.

Both the video and audio quality of the final DVD is significantly better
with DVD Maker. This may in part be due to the omission of the intermediate
publishing step, and may also have something to do with the use of the
graphics card by DVD Maker (I'm not sure exactly how this is done).

Unfortunately, the inability to label the scene selection buttons and the
apparently random chapter points leave the final DVD difficult to navigate.
I've already beefed about the lack of text labelling options in DVD Maker.
The auto chapter generation seems to have gone off track on this DVD, with
boundaries occuring at random times and right in the middle of farily static
portions of video.

[Details, details. Video from mini-DV camera filming 5 perfomances of a
school play. 24 GB of source 720x480 video in 11 wmv files, vbr quality 98. 7
movie maker projects corresponding to scenes in the play, each project using
material from 4-5 source files. Intermediate (Movie Maker to MyDVD)
publishing to wmv, vbr quality 98. DVD runtime 143 minutes]