I had some issues with my $850 Westone ES3X two years ago. Westone made some pretty serious mistakes when shipping 3 of my 4 sets (3 re-fits) and there was one very serious QC issue Westone were not willing to acknowledge at the time.
But, in all honesty, their customer service in the end was VERY GOOD and that was the ONLY reason I later went on to get a second set of UM3X & even later their new $450 universal W4.
Also - and I have to be very honest here - I wonder if I'd have had the same excellent level of CS if we didn't have the Internet these days. Westone, BTW, also knew I was a Head-fier who was pretty active on the "ES3X Appreciation" thread. Perhaps that also had something to do with the good service I ultimately got. But, in all fairness to Westone, there are far, FAR fewer horror stories to do with Westone's CS and/or QC than JH Audio.
It seems to me that some companies are still not aware of the TREMENDOUS importance, specially nowadays, of good Customer Service - just look at Amazon, a company that for years lost quite a bit of money, but they had a vision, a sound BUSINESS VISION, and the results of such a vision are there for all to see.
I've stated this several times before - a rather ignored and not very popular view on HF - that custom IEMs are, to a large extent, overrated. If anyone wants to comment on this particular issue, I strongly suggest they don't do it in this thread (not fair to the OP), but perhaps post their views on the subject
here instead.