Have yet to pull the trigger on buying the new Racer 2, just getting all the info I can on its operation before making the final decision. Besides the 2 coils (5" and the 7"x11") that come with the Pro Package what other coils that are made specifically by Marko are available for use on this detector? Do I understand correctly that coils for the Red Racer won't work with the this detector? Also in researching I don't see any concentric coils for it, only DD configuration. I guess that's why everybody is raving about it's seperation ability.