Dob,
I did not listen to the D-07. I was told by Esoteric and the dealer that the D-07 does not quite have the sound quality of the D-05. Although the D-07 has newer software and the obvious USB port, to reach the targeted lower price point, the D-07 does not have the same build quality as the D-05. For example, the D-05 has two independant power supplies, one for each channel. The D-07 has one power supply.
I hope that helps.
thefirstchorus