I just took (or attempted to take a class on applique--the teacher's
car threw a rod and she never arrived so it was rescheduled) and
was applique thread was on the supply list. My LQS sold me some
DMC thread (pricey--yes!) and said that silk was the best but that
the DMC thread would be easier to handle for a beginner.
P.S.--I enjoyed reading all the comments, all these tips and information
are just invaluable!