I always considered myself a "stereophile"; I abhorred any sort of DSP for 2 channel music. All the salesmen kept telling me about DPLII and I just didn't care. But after I got my receiver, I listened to it, and I think it sounds great. I not a big classical listener, but I'd imagine that it would create a fantastic full sound for that live setting.
My M60s produce a pretty accurate center image in stereo mode anyhow, so switching to DPLII doesn't collapse things to the center as much as fill out the center even more.