Mary,

That's exactly how I felt when I listened to the 22s paired with the 600.

The M3s will not give you the detailed sound that you've grown accustomed to with your M22s. Throw a thin blanket over your M22s and you can get an idea what the M3s will sound like. I find the audiobytes to be the perfect blend of the M22s and the M3s.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated