I just got done digesting Eli's great groove3 Battery 4 course and imported a guitar sample. In playing around with the cool formant based filter in Battery it got me wondering if there's anything like that in a dedicated audio unit plugin. The included stuff that comes with Komplete 9 ultimate that runs in Guitar Rig doesn't seem to do it. Also, when did Apple give it's audio unit fx a makeover? Most of the GUIs have a nice interface now.