My first thought is the
Source Audio programmable EQ if you want to quickly access your settings for each guitar. I haven't used this personally, so I'm just going on specs and other people's opinions. It's not even semi-para, so if that's something that's more important than quick recall, then this goes out the window.
If you're expecting to twiddle the knobs each time, I have lots of love for the
Tech21 Q\Strip. This would be a semi-para competitor to the Empress. I use it on every thing. If I don't want to take my whole pedalboard, I swipe this off and run it on phantom power.
My two cents.