I didn't really test them.
Just from use over the years.
I used the Hot Rod two-way; LMI two-way; LMI one-way (the wrapped one); a copy of the Martin rod, that was in a hollow chamber; the traditional, with the solid rod; and a one-way made into a two-way by putting tension on the rod, then truing the fingerboard. This allowed the release of tention to correct a reverse bow.(I took this from a factory I worked at years ago. They threw it away and I picked it up).
Is that five?
The wrapped one was the best for the buzz factor. But that was only on my very first guitar some twenty-five years ago. It's one-way, so that might not appeal to some. I am not sayint that every rod had buzz. Maybe the wrapped one will have buzz the next time I use it.
The wrapped rod from the onset, was much more secure in regards to its installation.
I wanted two-way action in case of a reverse bow, but that has never happened to any of my guitars.
Maybe if I used super thick fret wire and had supper thin strings. I will stick with one-way rods from now on.
The LMI wrapped one.
This isn't an advert for their rod, I just thought I'd pass my experiences using them.
The latest one I used was a Hot Rod, two-way, with the spoke adjustment....
Mike