in a nutshell:
The Onkyo is “considered” a better product technically as far as features, bells & whistles, and interface. …while having great sound for the price range.
HK is “considered” to have better sound quality and range… but isn’t necesasrily as “cool” or well equiped feature wise.
With that being out there - have you addressed the listening conditions of your room?
Have you considered the acoustic needs of the listening area?
Have you actually designated a listening area & are you choosing your equip based on its needs?
based on your choices above, I’m guessing not. If you’re not going that far overboard with your intended use… then you most likely wont notice “minor” differences in sound quality. Differences in range? Sure.
So - I would pick which one that you would rather use everyday. Or looks better with your current setup. Or costs less… etc