hakunamakaka
1000+ Head-Fier
I own the PM-3, and have used it with lots of pleasure for a couple of years. The reason to look for something else was the same as for you, wear.
I ended my search with buying the Aeon 2 closed, and I am very happy I did. It is really a clear step up, not just some small improvement. And compared with the PM-3 the soundstage is seriously larger. And although the bass is powerful (at least to my ears, it won't be Audeze powerful), it is certainly not bloomy. On the warm side maybe, but taut enough. If you love the PM-3, I think you will love the Aeon 2 closed too. Both try to be neutral but lively (Aeon 2 more lively than PM-3). The Aeon 2 clearly needs more power than the PM-3 though, check if it works with your setup.
I'm not looking for a bass cans, but I've made a purchase already and I'm disappointed, I think I'm addicted to planar and pm3 sound signature, that midrange and tonal balance is something...Can portable amp push Aeon to decent listenable experience ? Sad thing that there is no authorized sellers of aeon within europe ;/
I was inpatient and rushed with my purchase