I'll check out your thread and get back to you. I've been trying to discern with the audio lingo what it is I actually want and I'm struggling, but right now I've compared the earsonics sm64, FX850, and Heir Audio 8.a.
I find the earsonics to be the clearest and most balanced phone of the three, with the FX850 being the most integrated along all the frequencies (meaning the whole spectrum sounds like it is tuned to give one experience, rather than separating all the frequencies and having certain ones stand out, which the sm64 and 8.a seem to do. The FX850 does sound like it only has one driver (not sure if this is true), while the others do sound like the low, mid, high all have their own driver. I enjoy the integrated sound of one driver but prefer the imaging and separation that multiple drivers offer.
The 8.a has far to much bass to me, but I like its organic sound and clear midrange. The highs, on the other hand, take a back seat, which I do not particularly like. I don't like "hot" highs, but I think the sm64 does these nicely - they are clear without being harsh. However, the FX850 I thought had the best highs, in that they remained organic while still being detailed. I'm basically looking for an sm64 with better bass extension, a touch more warmth, and more detail on all levels of the spectrum. (Sorry for the analysis, you may have not heard the heir audio or sm64, but I'm working with my novice lingo prowess here).
The bass quantity in the sm64 is about perfect to me, just could use better extension and detail. The midrange of the 8.a is about perfect to me, with its liquid organic tone. And if I remember right, the highs of the FX850 sounded just about right - not subdued or separate from the rest of the frequencies, but well integrated. Let me know if this helps, or if you'd like more info.
To answer your questions directly, I'm not sure what is more important. The 8.a is more organic, while the sm64 is more transparent - the FX850 falls somewhere in the middle, but I found at a loss of clarity and imaging. I like my sound to be organic (analog sounding), but also to be incredibly detailed, with no frequency bleeding into the others. I found that while the 8.a is the most organic of the 3, it is at the cost of way too much warmth and an emphasis on bass quantity, which I didn't find natural.
As for mid-bass vs. sub-bass, I'm not sure I can distinguish between the two yet (just don't know which is which), but I've read the sm64 has a sub-bass hump, which I find pleasant. I prefer the bass to be transparent, detailed, and only what is called for in the recording, while I find flourishes/elaboration/coloring to be appropriate on the mid and high end of the spectrum. I want the mids to sound organic and liquid, the highs not sharp, but crystalline. (I'm looking into trading my 8.a for a JH16 pro freqphase, which apparently has these characteristics, but I'm open to any suggestions, as I'm new to the sound world).
I really appreciate your patience. Let me know what you think...