i downloaded the demo and need to say, it's special but very nice!
there are so many choices out there, what kind of equalizer do you prefer for sound-design?
FabFilter has excellent user interface and very advanced features for mix and mastering (LR,MS, Oversampling, Solo for bands etc.)
If you want vintage equalizer try TubeTech emulation from Softube.
PE 1C - Excelent Bass management and analog feel - good for punch for smashes :)
Of course this is my personal opinion!
Anything really flexible, with good overall sound quality. The Waves Q-10 works well. The parametric EQs in iZotope's products also work. It is also helpful to have a really good notch filter available to deal with certain types of noises--again the Q-10 can be set up that way, though my favorite is an old plug-in I have called the Blue Filter.