Your review of in-the-ear headsets was interesting, but you might want to give a little more space to custom eartips. I bought my Lightspeed Mach 1 with custom eartips as an integrated package, which includes a negotiated, reduced fee for the audiologist and saves a little cash. But either way, its we’ll worth it. With custom earmolds, the Mach 1 is so comfortable I cant feel its presence on my head or in my ears. It also stays in place much more securely than with foam tips, so we’ll that I removed the over-the-ear clip from the left earpiece/mic unit and it still doesnt budge. And, contrary to your quote from the competition, although the low-frequency attenuation isn’t as good as the best ANR earcups, the high-frequency noise reduction is as good as the best head-crushing vise Ive worn.