Sonic Defender
Headphoneus Supremus
the portable form factor, price of the pm-3 is just so hard to beat.
unless i do go for open, there is nothing i can find that would be a match for the pm-3
even the closed el-8 the price difference is too large.
i could go with a sennheiser maybe? LOL too many options but nothing yet i can find that betters the pm-3 (portable/closed/price)
The new Audeze might get all the boxes except for price ticked. You had originally omitted that you wanted closed and portable when you asked about HiFi Man alternatives.