mostly Audio Research now i need digital help? ? ?

ithanks for reading, i have started collecting a system that i think is both musical, potent and kinda high on the "wife acceptancy factor scale". it consists of:
audio research ph3-se phone pre black
audio research dac7 d/a converter black
audio valve Eklipse linestage pre-amp black with gold trim
conrad johnson evolution 2000 amplifier gold-ish
a dvd player i am using as a transport that i am even- ashamed of.
no turntable yet as well.
truth be told i will buy a real turntable in the next year or two but my quandry surrounds the transport area of my system. to continue my system with both high fidelity AND the "wif acceptancy factor" i was thinking of trying to find a deal on something black and audio research and i have never heard one, then again i hadn't heard the dac7 before making that purchase. perhaps someone might have an idea of a good match for my situation, i have ben pondering from ARC the cdt-1, the cd3-ii, the ref cd7 and know i can't afford the ref cd-8 so that is out. should i buy the cdt-1 or cd-3ii or cd-7 and connect to my dac7? should i buy the ref cd-7 and get rid of my dac? really could use an educated and helpful opinion....thank you for reading, paul.