I prefer DEQ because it applies the same boost in all channels, and gives it a smoother transition to the subwoofer (compared to no DEQ and using manual SW trim increase). Of course, several factors play into this too and what you prefer. If you like more subtle bass boosts it's likely just fine. Some speakers can't handle the bass increase and can sound muddy or distorted. Same goes for the subwoofer. The substantial bass increase (about +2.2dB for every -5 reduction from master volume at max reference or 0). \n\nP.s. since I usually watch at -15 at my loudest, I decrease my surrounds and top rears by -3dB to compensate for DEQs surrounds\/rear boosts (about +1dB for every -5).