Here's some good track for Basstest:
Russian Circles - Station Album - Harper Lewis (Good Kick drum & Bass line)
For speed test try
Pulse Percussion Ensemble - Live Album - Trio Per Uno
I'm going to check out some of the other music you used later, thanks. I have the Ultrasone test disc, and track 2 is a good track for testing bass speed.
I just compared the HE-500 via DACmini amp to the LCD-2 balanced from the SR-71b, using the DACmini as source for both phones, and track #2 as you did. The HE-500 are pretty darn close in the bass control, although there is a slight decrease in the snap and kick from the HE-500 vs the LCD-2. But I had to concentrate to hear it. I still think the bass is still faster and more controlled than with my LA7000 that I have right here too, and it's almost as good as the HE-6 bass the last time I compared them. At the same time, the deepest bass seemed a little more present with the HE-500 vs the LCD-2 on this track and these amps. (Note, I don't think the LA7000 are too slow, even though they don't keep up with the orthodynamics, HD800 or stats)
I just switched to Kenji Williams "Death and Rain" off the Faces of Epiphany album, and my findings were similar, but the HE-500 are still relatively fast in the bass vs my dynamic headphones (LA7000 and HF-2). Also, the other day when I compared the HE-500 on my ZDT amp vs the vintage Stax Lambda Nova Signature on the Woo WES the HE-500 killed the Stax in bass control and detail, although the HE-6 were still the best of the three and on par with the LCD-2 bass. I was listening to infected mushroom at that time, Dancing with the Kadafi.