Hello. You will find owners that are passionate about Blue Ox, Roadmaster and others so this will be a difficult decision for you. And yes, you'll find complaints about all brands too. But I will toss in my experience with Blue Ox and Airforce One.
We have been using a Blue Ox steel tow bar on our 2005 Newmar KSDP since 2010 in conjunction with an Airforce One and could not be happier. They have served us flawlessly. We towed a Ford Escape hybrid up until 2018 when we upgraded our toad to a F150. Again, it was a no brainer. We had another Airforce one installed in the new truck. And on the rig, we installed the Avail model from Blue Ox with the 10k tow rating since the truck is so heavy.
Soon we will be moving up to a newer Newmar and yes, we'll install a new Blue OX tow bar on it.