Hey @johncluster, I will certainly keep this post updated (as appropriate), but I do need to let y'all know that I went with a different regulator than one of the two mentioned in this post.
It's the AGPtek Welding Gas Welder Oxygen Regulator CGA 540 for victor torch cutting kits https://www.amazon.com/gp/product/B00JJGL7LW/
I did that for a couple of reasons (which hopefully I won't regret haha)
The price
Availability of Prime delivery (I've already waited so long for even just a neurologist appointment). Others would have been at least a week in delivery.
The description does not specify the barbed nipple size, but I'm assuming (hoping) it will be 1/4" because a lot of oxyacetylene hoses are also 1/4".
Since I am a freelance work-at-home type of person, I don't have PTO or even insurance, so since I've not worked in almost 3 months I'm pretty low in my nest egg.
We'll see how it goes, and as I said, I will keep this post updated with my results. Even if only one other "new" person reads this, it will be worth taking the time to present information that might not be available somewhere else. Plus, Google does actually crawl these posts for search engine results.