I have been thinking about the Killer Kali module but to a minimal degree, I know myself.
I generally buy a module, then figure out how to get it to sound like I want it (which is generally a single channel Plexi that Friedman modded some years ago). When I get there, I decide there is no reason to have another module that does that for $400 so I sell it.
I have a hard time getting some other sound to take root because I am a one trick pony. I played a lot of shows with that kind of sound in a single channel amp with an EQ pedal set for a loss for a cleaner tone or a boost for a dirtier tone.
Still, I'd like to try a KK. Maybe when a used one is $300