Checking on ebay : Hifiman S + shipping + import fees = 170 euros
1More H1707 triple-driver : not the right moment over 200 euros
Keep an eye on them, they're down to $120 quite often these days. I got my pair from Joybuy for that price shipped to Norway.
With the headphones you're used to (I've also got most of them) I think there's a fair chance that you'll be disappointed with a lot of the offerings out there (at least I was). In the end I ended up with a pair of of QC25 for flights and I also bring some IEM's when traveling. The Edition S are my walking cans and I sometimes use them on shorter trips as well.