According to the review below, the Cambridge Audio AXR85 looks like it isn't a worthwhile upgrade over the Sony STR-DH190. If you've auditioned both, do you agree? I've seen plenty of reviews that praise the Sony's value proposition, but I would have thought the Cambridge Audio (and the NAD) were in a different league.
https://www.nytimes.com/wirecutter/reviews/best-stereo-receiver/
https://www.nytimes.com/wirecutter/reviews/best-stereo-receiver/