Okay, the D'Addario EJ-16 have been on long enough to lose their initial brashness. They sound good, as D'Addario tends to. Nice balance, strong volume, excellent quality, good tuning stability, solid bass. But, surprisingly to me at least, not my favorite of the group.
That's the last set of the group, so now it's time to summarize my selections.
Best overall: no contest, it's the Stringjoy Naturals. Super musical right from the get-go. Beautiful tone, perfect quality, excellent playability and tuning stability, strong bass, good volume, outstanding balance. If money were not a concern, they would instantly become my go-to. But money is a concern, and they cost twice as much as the next most expensive set in the test.
Best for the money: again no contest, it's Webstrings. They're the least expensive brand I tested, yet they were among the most satisfying. Wonderfully musical, perfect quality, nice volume, well balanced and stable. Really the only thing Stringjoy has on them is playability; they're a bit less flexy. But seeing as how you can get four sets of Webstrings for the price of one set of Stringjoy, well, that's an acceptable tradeoff. I liked them as well as anything else I tested aside from the Stringjoy, and better than most. Webstrings wins the test and will become my new go-to.
Runner-up honorable mentions: Martin SP and GHS phosphor bronze also tested very well on this instrument. I liked the GHS more than I expected to. Martin has always been a good reliable choice at a good price, and if Webstrings disappeared tomorrow, I'd buy bulk packs of Martin SP and pack them into individual sets for the cost savings. BlackSmith also tested extremely well, definitely first when it comes to volume, but well made and well balanced. Adamas was better than expected for Chinese manufacturing. And D'Addario is always a standard, but they weren't any better than some of the other brands that cost less; I've noticed they're heading toward premium pricing lately, and unless you find a sale, there are more economical options. I'd buy GHS or BlackSmith first.
I imagine this conclusion may be surprising to some of you. Thanks to everyone who stuck with this all the way through.