A while back, I bought the Onkyo for use in a 2 channel system (music only) that includes subwoofers.
Before that purchase, I spent about a year auditioning the options:
Onkyo, Integra, and Denon pre-pros (XT32), as well as Marantz and Anthem (room correction, but not XT32) and several traditional high end models from McIntosh, Meridian and Classe, among others. I tried to find a 2 channel HK 990 for audition, but failed.
My take away was "Find the least expensive XT32 equipped model and call it a day." Hence, the Onkyo.
I know that others will disagree, but IMO, XT32 pretty much dominates the listening experience (in a stunningly good way) when there are subwoofers involved.
Caveat: If you're using analog sources, the equation may change.
Marty