Ok, here is the deal. I'm on the verge of going into HIFI path or stay with my MIDFI system. My wife told me I won't be satisfied with 600 series in a year. But, with 604, I can keep my 3802, but if I take CDM 7NT route, I'm overhauling the whole system which will cost me bundle, of course. So, it comes out to this question. Do you think that CDM7NT sound is twice as good as 604's? Would CDM 7NT will be enough? Any opinion would help me greatly.