You talking to me?
Already posted (see below) earlier, one excellent shot from Kaysen. Features the ES cable.
So far,seems to me the ES cable is the winner (over the Fisher cable), as the sound sig is somewhat more airy, but not that different than the stock TF10 sound. Of course, the ES cable cost twice the Fisher cable ($40 vs. $20).
I do feel the bass is a little more recessed with the custom tips over the Sony Hybrids tips I use with the stock pair I still have. Could be the cable, but no way to tell because the new socket does not allow me to use the OEM cable any more (the pins are too small, and the sound cuts in and out). Also might be the custom in-ear depth, not sure.
All in all, very happy with the move and would do it again. Also glad I have two pair, because there may be times I need the stock pair as well. As far as isolation, the customs don't isolate as much as I would have thought. For one, I sent Fisher a pair of old custom sleeves I had made by FutureSonics, not new impressions. They scanned the custom sleeves to make my pair, and it worked very well because I knew the fit would be right (new impressions are not always on the money, which I sort of found out with my UM56s).
Now, with my new pair of Westone 2s on the way (bought them used here), I will be set with two excellent pair of IEMs both at $200 or so.
Anyway, no extensive reviews of the TF10 custom sound, because as I noted, it's pretty much close to the stock sound, which is fine with me. And the Sony X EQ also can help with these phones, of course. Out of the Zune80, no EQ, they sound excellent and same with the Clip+ and flac tracks. Not using them with the Amp3s due to hiss issues.
http://www.head-fi.org/forums/6298201-post1130.html