I know I'm digging up an old thread but wanted to share my experience with this product, as well as what is next for me. Just so you know what I was used to: I have been wearing Etymotic er6i's for years, but they are just not comfy enough for a whole day ride (partially due to the fact that now have a tight fitting Arai helmet).
I ordered a set of Challengers (dual driver model), the MC version (should be lower profile). Went to local audiologist, got ear impressions and sent them in.
The first set of Challengers arrived and the right one was obviously molded wrong. The wires were also hurting me on the outside of the ear lobes as the wire location was exactly on the raised part for me, on both sides. I took photos of wire positions also so this can be addressed in new set.
Sent that back... few weeks later, got another set.
This one, I would not get a seal with on the right ear, even if not
wearing a helmet (so slight push on my ears was not even a factor). They felt comfortable but they would just not seal right? I tried my ear impressions and they were fine? Odd. Additionally, the wire was still a problem on the right side.
At that point, as all of this would take few weeks at the time (send the impressions and Challengers in, wait for the lab work) - I gave up. The company was gracious enough to offer me most of my money back as I had so much trouble and we parted our ways. I do believe that their customer service is phenomenal
. But for some reason the product would just not work for me (shrug!).
Additional problem for me was that the earbuds did not really sound good, I thought. They sounded OK, but for a dual driver setup I was a bit disappointed. They definitely did not sound as well as my Etymotic set. I was going to suck that up, but it ended up I did not have to in the end. Voice (like podcasts or audiobooks) were totally fine but I found music lacking.
Finally, I bought a set of Westone UM 10 Pro musician IEMs (I choose UM 10 Pro over W10 because I am not a 'huge bass' fan and seriously - UM 10s have all kinds of bass). I am still relatively new to them, but so far, they are proving to be excellent from both the sound and fit perspective. I wore them under the helmet for few hours already and this seems to be what I was looking for!