I play through a couple of different frfr systems: Bose L1 Model II and FBT Maxx 4aa. There are some differences in their respective eq settings, but that may have as much to do with the nature of the systems themselves - one is a "tower" and the other a floor monitor - as anything else....although, the only reason that there are so many frfr speakers is because they all sound a little different.
Let your ears be your guide. I have found the highs to be very *sweet*, and, in general, most profiles need to have the bass reduced just a touch.
The main issue I find with the the RCF/Axe-II combination is that I cannot get natural feedback control, regardless of whether the monitor is on the floor or on a stand. Instead of generating warm natural harmonic feedback, I just get shrill spikey odd notes. This is what sent me back to an amp & cabs.