.... the list is a difficult one to be sure...
for example, lets take a classic compression driver - such as a Vitavox S2, or an S3 for that matter. Alternatively, an Altec 288.
Such drive units were used in speakers like the Altec VOTT - an all time classic speaker by anyone's measure.
However - Altec (for example) drive units - now gratefully still made by Great Plains Audio - I would say they lose out a little to the best drive units made by JBL and TAD.
That is, lose out both by my personal preference, but also their power handling, and frequency response.
.. do we therefore dismiss the VOTT (for example) - and instead have in the list a modern alternative - like the Meyer X10?
There are 2 ways to go with a list like this .. the ''classic car rally'' - beautiful old Jags etc, or the ''modern supercar'' list.. lambo's and such.
There's a world of difference between an all time classic with ''great drive units for the day'' - and, alternatively, saying those drive units beat anything made today (rhubarb
)
NB,
I've kept my examples around horn speakers, but the same comparison can be made with near field monitors, mid-sized floorstanders etc.