Rick, I have the Z2300 and I added 161 Bose to the system, it improved the meds and the quality.
I like the 1:2 system, it adds good base which my KN7000 needed. If you’re buying I would consider the Logitech Z5500, still under $400 and the best buy and sound for the dollar.
You may need a mixer if you are using a mic. Much better control of everything – although it’s more to carry.

If I were to invest again it would be the Z5500. The only set back is 5 speakers and a sub -- and lot’s of wires.

Have fun buying, John C.