Ok. I have only 5 hours of listening with these, but I could not help myself to keep from posting a quick follow up. First I ran some low frequency sweeps and long full spectrum frequency burn in tracks from the XLO Reference Tone Cd. This is what I usually do when I ever get a new pair of cans. I then played a high frequency tone sweep and then let them sit for about 5 minutes then started jamming. For my curiosity on how these would perform on acoustics, against the original Tma-1, I put on a 24-bit 192khz recording of The Eagles, "Hotel California" with eq flat from my Asus Xonar Essence St sound card, and using J River Media Center in Wasapi - Event Style Mode.. and no doubt. I could already tell these were more neutral and more "acoustic friendly" headphones than that of the original Tma-1's. But ever since then I have been listening to electronica and ambient music. Listened to Boards of Canada's, "Music Has the Rights To Children." Never had such a fun time listening to this album. And I have heard it a lot.
Based on value alone, I love both earpads this time around. I am using the pleather ones for their wonderful comfort, but i think the Foam ones isolate a bit better, but a touch less comfortable IMHO. I still prefer the pleather so far. I think the extra 50 bux is justified. The new pads I would have dropped $25.00 on alone. And the more neutral sound makes all the difference with more varieties of music. I have not stumbled upon one genre I did not like, or love, so far. Great job, AIAIAI!!!!