the thing is...
no matter WHAT the EQ you use,
the SOURCE, and the CAPTURE,
will always be more important.
every mic has a sonic fingerprint,
and sometimes the make and break point of a particular track is simply the choice of mic.
the whole purpose of having to use EQ in the first place,
is that something is missed in the capture.
there are brilliant guys out there, that create custom eq curves using all sorts of devices (i'm talking hardware eq's now.......)
and they know what they are going for..
but ultimately, their choices still boil down to SUBJECTIVE CHOICES..... most of the time.
i'm afraid that any chasing of particular eq curves, or 'emulations' of famous hardware eq (PULTEC comes to mind) is probably not going to get you any closer to the truth (which is, ultimately, the best tracks you can conjur)
there are so many other factors that come into play that are much much more important.
forest for the trees.