Best 40 to 50k used speakers

Way too big for normal listening room.

@thieliste Well you soon get used to the size...in my eyes they're beautiful. You just have to spend some dollars on appropriate jewels to the wife :-)

The Dutch and Dutch 8c  would work in a medium room. I really like mine , I would probably like the active ATC too.

I can't imagine for 50K you could do much better from a performance perspective than a pair of brand new JBL M2s, their SUB18, and their matching amplifiers.  This assumes an existing room with good H:W:D ratios, properly properly constructed, damped and diffused.  I realize many audiophiles hear with their eyes every bit as much as, if not more than their ears.  If that's you, ignore this and just get the pretty ones. 

@eganmedia I completely agree with you, i care much more about the sound quality than the fancy look.That's why i'm also looking at brands like ATC and Spectral audio.