Any ASUS or ASRock board between 150 and 300 dollars is going to be pretty excellent and both companies have good warranty support.
If you are looking to simply get a high end board that is trustworthy, you already know that the Hero boards are the go to. That pretty much goes without saying for practically every Hero from the last five or six generations.
If you don't require, desire or need the ROG features, and honestly, aside from the highest end boards where loop hardware is likely to be employed, you can usually get just as good a board without the ROG bells and whistles with the A series boards from ASUS. The Z370 and Z390-A boards are no different other than having been branded as "Prime". The TUF boards are simply the old Sabertooth series renamed and are usually pretty good choices too.
I personally would recommend one of these four boards unless you really need the higher end bells and whistles from something like the Formula or Apex level of boards and intend to be doing major overclocking or running a custom loop and wish to use a monoblock.
The Z370-A (Or Z390-A. The Z390 boards might be a good option as they have native Wi-Fi AC and USB 3.1 Gen 2), Hero X, The ASROck Taichi boards or the ASRock Phantom gaming 6 or 9.
There really isn't anything to complain about with any of these boards and the quality from ASUS and ASRock on their mid tier to high end boards is always very good. They also tend to have very good granularity when it comes to BIOS features and better custom fan profile features than what I've come to expect from MSI or Gigabyte. Gigabyte has good quality but I feel like they've pared down the feature sets on all their boards, even their highest end offerings. When I can only adjust memory in .020v increments rather than .005v increments like what is generally standard on unlocked chipsets, I start looking at other options which is why I've mostly moved away from looking at Gigabyte unless there is a pretty compelling sale on a particular board.
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