Apogee, PSP NobleQex and the Overloud EQP are all great... for slightly different reasons.
Apogee - Most correct emu IMO
PSP NobleQex - I love the extra middle bell filter and the adjustable low-shelf dip frequency shift... The latter can really tighten up the kick drum (by adjusting the filter freq downward).
Overloud EQP - Because it sounds good, and are very cpu effective