Help-IC's needed AU or AQ

It's time to replace me 12 year old Cardas
with something new. I was thinking AU24 or
AQ Cheetah. Both seem to be safe choices. I'd like to buy and not look back,I do not relish the thought of auditioning cables. Other thoughts welcome.
System consists of :
YBA Passion integrated
Marantz SA-14
Dunlavy SC111's
Monster 2.4 bi-wired speaker cables(next to be changed)