I've found that it's more dependent on the recording rather than the actual genre of music. Some of my older CDs, or the bargain-bin classicals, sound pretty limp and flat.
I've rationalized it this way: I'm getting far more enjoyment out of quality recordings on my current setup...hearing new details in the mix, etc. That never happened with my old boom-box or HTIAB setup. Logically, I can conclude that the "stuff" that's packed into my good recordings (Deutche Grammophone, etc.) is being brought to life for the first time, leaving the other discs behind in the dust.
I suppose it's all part and parcel of the never-ending "upgrade curse"...you can't just own the decent hardware, you're now FORCED to get the better software to prevent disappointment.
