Mc501 & c2600 or devialet 440?

What is the best electronic for 2 channel music?

I now have Mc501 & c2600.
Is devialet 440 better sounding?
Speaker olympica 3 or b&w 804 d3
What do you not like about your MC501 and C2600?  I have the MC302 and C2500 and I really love the sound.  I heard Devialet and to my ears, wasn't that impressed.  It is small and sexy looking but I found it a little light sounding.
I had Hegel h360 before and the sound had more details with Hegel. But  the mc have more punch. 

A other question is how do you hook up a sub?