The Devore's are better than the Heresy's without a doubt. No comparison at all, and I have compared them. I've owned the O/93 and the Cornwall 4. That's a little tougher to compare. The Cornwalls have an effortlessness to them that is hard to match but aren't as refined. The Devore's have clarity and tone. I found the O/93 fatiguing at times but in all fairness, I think they were too much for my room or tastes. I prefer the Nines with the side mount in my space. Different animals.
I have an Audionote amp but with a pair of Fyne's. I've found happiness with this set but still miss the Devore's and Cornwalls at times.
Only listen to 40% of what's said on this site. The other 60% the majority is your own experience.