I think you will find that the significant difference made by the loss of Audyssey XT32 EQ is nowhere near compensated for by any audible difference between modern DACs. This is especially so in an untreated room where the room-created distortions are only being removed or attenuated by electronic EQ.
DACs are just a commodity these days - typically they cost a few dollars.
You bass manage at 300Hz?
Go to Walmart and get yourself a BD player with HDMI for under $200..
Right. But unless your Paradigm Sub is crossed over at 300Hz, the main speakers are all subject to the effects of room modes between 300Hz and whatever the selected bass management crossover is. There's nothing I see in your quotes (or in what I have read) to indicate that one should avoid EQ in that range unless there has been effective physical management of room treatment.