In some circles, that means something very different that what you probably intended to say
Seriously though, M-DAC is probably the way to go in your case. Since it seem fairly popular you can probably even find one on the used market if you want - a lot of these units from smaller companies are difficult to find second hand.
Just on a spec front, other then the Jitter thing, the D18 is a fair bit better then the M-DAC, And man oh man the M-DAC is ugly as sin, looks like the cousin of the NAD 3020.
(Forgive me for this, but I have Fine Art training so looks matter) but at its retail price, I may just overlook the looks. The HP amp is a nice bonus, I'm willing to bet it will play nicely with my Denons.
Now to wait till I finally get my Audio-GD Master 8 (which is gonna be months, when I have the cash) and then to convince myself this is a big improvement over my STX. Lol sounds like a circlejerk, but I think we all know I will buy one, if I don't find something else to perv over..