There are a few other universals like this that also offer customization. I know Lear's new iem has that option and from musica acoustics it looks like the Tralucent 1+2 has some customization options but it is more limited.
I switched out one of the stock cables from JH Audio I had with my Silver Poison cable. The straight plug works better with my ZX1 anyway. It works better with that cable as it doesn't have the memory wire which is good for a glasses wearer such as myself. I've been using two setups on these for the most part. One is right out of my ZX1 and the other is using my Concero HP dac/amp with my laptop. The Mentor doesn't seem too picky on what is being used like many iems and sounds great. I did try my phone (HTC One) yesterday for a little bit and it sounded great from that as well.
I like these enough and I've decided that I'll use these as work iems with my ZX1 or Fiio X3 as source most of the time. I used them today at work (funny story actually) and my coworker asked about those. She thought they were expensive and cost more than $80 or so. She damn near had a heart attack thinking I'm crazy when I told her the actual price :) I think I'm pretty set with what I have and should relax for a while.
Also I wish I got the custom version but the lab being in China worries me about refits. They certainly give my other customs a run for their money albeit slightly different signature. I'll need to do a A/B comparison. I think I should have time this weekend as I have Monday off.
Edited by rawrster - 1/15/14 at 6:10pm