I ran both VVME and DDM kits. I prefer the VVME kits, though they're both made in China.
I had to use a relay on my Charger, but as far as I know none of the Ford vehicles use a CANbus system like the Mopar cars, so a relay harness isn't necessary (unless your worried about the initial voltage spike to ignite the HID, which is pretty much irrelavant.
My fusion showed up today, and I already have a VVME H11 in the waiting to install. I'll probably do that Jan 1st.