I found an authorized dealer with fairly inexpensive ($350) refurbished XD600/6 or M600/6 with factory refurb warranty. Please PM me if you are interested (they are not a forum sponsor so any link I post will likely get deleted).
Technic provides a great service to the BMW community by offering his harness. Makes life so much easier.
JB4 + Pure Turbo Stage 1 + Mfactory LSD + AA FMIC
Dynavin N6 + Mosconi AS100.4 + AS100.4 + AS200.2 + Morel Piccolos + Jehnert XE200 + Dynaudio 1200