Nice system. I agree with your statement regarding the Quads. They are more dynamic than most folks give then credit for. Many have heard Quads with less than perfect panels or in need of attention which put them out of spec. When the speakers are within spec...look out! They are plenty dynamic and as you know have that reach out and touch you mids which are addictive. With the right amps..the bass is good too IMHO. I run a Zu sub with classical mostly and some rock when I want to boogy.
Did you buy them with the Crosby mods or have them sent off for update? I would think the MFA a pretty good choice for driving them too.
Congrats and enjoy,
Ken