Sorry I disagree on the 'no need for a killer sub' on a 2 channel system. Assuming we're talking music, IMO the sub quality is far more important than that required for movies. As far as the 6k or a 10k, yeah, all bets are off if one throws used into the equation.\n\nHave you had the Opportunity? I have had a sit down with just two speakers in a room 20’ by 20’ with a Pre-Amp, Source and just a two channel Amp. The two speakers where: Klipsch Heritage Series La Scala ll\nneed I say more? All speaker’s are not Created equal. Going up even higher would blow these I just listed. Never said on this Thread the gear or speakers had to be new.:) Even at new retail still, find the right Audio Dealer and Dreams and aspirations are possible.