So I'm edumacating myself again. I read that Resonessence article several times in the past, but I guess I forgot some of the finner details. It's been over a year. And for some crazy reason I thought the sharp filter was for pre-ringing and slow filter was for the group delay, kinda like the Concero IIR/Apodizing filter combo. (opps...)
I'm thinking the slow filter is inherently superior now. At least on paper, so I will give that a hard listen later to confirm this. I agree that the classic FIR (brickwalling) is probably a bit overkill.
*I think the slow filter does have more extended harmonics (and air) and better imaging/staging cues because of this. Not sure what I was smoking when I thought it had more pre-ringing, perhaps the larger stage made the sound more "dispersed" and I confused it with blurryness (pre-ringing)...
Edited by M-13 - 5/18/14 at 12:46am