Hi, and welcome to something I hope is helpful to you — some simple testing of audio plugins which you can use for comparing, or just to find out more about each one. Plus some things to help with your recording and mixing!
There are all kinds of great techniques in using the boost and attenuation simultaneously on an EQP-1A (or emulation). The passive circuitry interacts in ways which allows a whole range of control over the frequencies which are not apparent.
The Pultec EQP 1-A is the most hallowed of all studio equipment (along with a Fairchild 670). Apparently, if you have an original one of these a holy presence descends upon your board.
I love the Pultec HLF-3C for cleaning up the high and low end. It doesn’t add any color, so don’t expect some kind of analog-ifying. Not cool or sexy, but it does have great curves.