I have the fiio e17 for an amp/DAC. I can't decide which of the 2 headphones to buy, quality over portability or vice versa? I want to use them on the go, but I also don't want to sacrifice too much SQ.

I'm kinda new to the world of audiophiles and don't know much about headphones, so I would appreciate some help. As the title states, I'm looking for the best headphones for jrock and jpop under 300(preferably <250).   I listen to these bands/artists: 1.asian kung fu generation 2.the...