I know this is a unfair comparision to say the least.But the decision to purchase some new phones has been harder than i thought. so here we go....Im just about stuck on buying some sony xb90's, is there any portable headphones or IEM's that would be better than these under $180. Better sub bass,better vocals and sound stage
unfair comparison Portables vs IEM's
Xb90 were only introduced for the asian market. I don't know how many people can give you a decent answer about those. IEMs and headphones made by popular brands are priced accordingly to their sound quality (Sony, sennheiser to give a few names) so finding really better headphones could be quite hard.
IMO stay with IEMs.