Baxtefer wrote:

"Sheldon Brown says it's OK."

I have spent hours reading Sheldon Brown.
What a resource.

I did a search on Miche hubs, as someone suggested.
I found it somewhat inconclusive.

However, regarding cost-effective hubs, I sensed a lot of consensus on Surly hubs as a very reliable hub for the money.
As far as I can tell, Surly does not make a single-cog hub, and I had wanted a single-cog hub for nothing more than aesthetic/minimalist reasons.
As a helicopter mechanic once told me, "don't let perfect get in the way of good-enough."
A surly fixed-fixed might qualify as good-enough, especially considering the price difference between Surly's and Phil Wood's hubs.
I'll check out Paul hubs, too.
So far I haven't heard anyone mention Dura Ace hubs, and so I'll do a search.
The search function works very well in this forum.
Thanks for turning me on to it.