I use post-eq di so I get a decent say in my sound foh. I always start with eq pretty much flat and boost what's needed for a good sound. Saturday afternoon in a field needed extra bass as not through pa. Evening in front of a wall in a long thin pub mids needed boosting. Sunday on a proper stage, pretty much flat but a tiny amount of boost to treble and bass, hit the sweet spot as when I switched to my jazz was able to really change my sound with the controls on the bass and hand placement.
Fwiw that's the real test. If your rig/pa sound is unbalanced, you will struggle to achieve a range of tones.