I'm certainly familiar with the dcx. I have one for each channel. After a lot of experimentation with 8th,4th and 2nd order slopes, I am now using mine with 1st order. The shallower slopes on the dcx are way more transparent,dynamic and musical. I never would have thought this of dsp if I didn't hear it myself (The effect not subtle..). I can get away with 1st order because the drivers I use are VERY well behaved outside of their passbands.