I’m after some good headphones to use on the go with my iPhone. I can’t get on with in-ears - I’ve tried Shure 535s in ears and Sony WF-1000xm3. Both excellent, but just not for me. I’d like some good on ears or over ears if they are light, open backed. Used to have some Sennheiser PX-100 which were ok, I’d happily pay up to £200 for something good. I like classical music and jazz, so need something that is smooth and non-fatiguing. Something that would fold away might be an advantage, but probably not absolutely necessary. What does the pfm massive recommend?