Excellent gym phones after burn-in

I've tried several different phones for the gym, but they've all fallen short in some way. My last (Sony MDR EX81s) had great quality but just didn't stay in place and proved distracting.

For my particular shape of head and ears, over-the-top and in-ear style just didn't work. Both are too unstable, and the in-ears in particular demand a particular size, shape and symmetry of ear that I don't have.

The PMX 60s are extremely light, comfortable and stable, easily staying in place through 30 minutes of fairly vigorous exercise on a rowing machine followed by 45 minutes on a cross trainer. At no point did the phones move or need adjustment.

The sponge pads did become very wet. Not uncomfortably so, but they needed a few minutes to dry out and I wonder what prolonged "chronic" exposure of this kind would do.

Sonically I think they're excellent. Initially they displayed a high level of sibilance (hissing) in the treble, but after googling for advice a bit, I stuck them on my PC with a random mix at high volume for a few hours. I've always thought this sort of advice was so much rubbish, but in this case it made an immediate and genuine difference; I don't detect any sibilance.

Driving then with a Sony NW E107 or Rio Cali, they deliver more than enough volume to drown out my surroundings, but this is where another potential disadvantage shows; the phones leak enough so that they'd almost certainly be annoying for a fellow commuter.