So, "none" is your answer but you read a lot. Fine.
You don't like a brand? Cool, I don't like some companies, soooo....
I had shit fail from nearly every hardware vendor. MSI, Gigabyte, Zotac, ASRock, ... But so far my track record with Asus is pretty good. My dual Xeon is on an Asus board, my Skylake i5 build (that I sold to a friend) is still running fine. And now on ryzen .... same thing, running fine.
Maybe you should also consider how many boards Asus is selling compared to anyone else.
Also I don't know where you live but I can't say that Asus AM4 boards are overpriced, actually they are more on the reasonable side here in Germany. So could you link to a shop where you get your price information? I would like to see that for myself.