Xiaomi Piston 2's would be my primary HP's, together with a Rockboxed Sansa Clip+. Cheap and sufficient SQ on the go.
It's kind of embarrassing, since I both love and collect vintage Stax electrostats, but I'm happy with my speakers, and very rarely need to use headphones at home.
Rockboxed Sansa Clips with a 32gig card are the best!
I want to buy 3 more old models to forget about in a drawer for when they stop making them anymore.
Not much of a can amp, but good sound quality into a preamp for sure.
Try some Sennheiser PX-100's with that Sansa someday.
Best sounding pocket-sized, foldable, durable thrashabout on-ear cans I will never get rid of.
Sound 10x better with a simple 9V Altoid tin headphone amp.... Enough to go deaf and enjoy the sound, despite, all the way there....
Sennheiser 600's (over ear) everyday for me,.. Kind of need a "real" amp for those those. Laptop soundcards need not apply...
There's better but these do nothing wrong for my ears.
And a bunch others of equal and lesser quality for other times..... But Senny 600's for next many years, everyday listening.