DAO of course.
if you were overburning that would be a necessity.
700MB your'e not overburning, but why even consider TAO? you're not going to add any data to the CD in multisession anyway, there's no space at all.
and TAO has worse compatibility with players etc.
i can see no reason at all not to use DAO!
One Ring to rule them all, One Ring to find them,
One Ring to bring them all and in the darkness bind them
In the land of Mordor, where the Shadows lie
M.C. Escher - Reptilien