Hi. I'm looking for good portable closed headphones for that i can find for about £100 / $150 or less. The genres i listen to are as follows:

J-Rock : Bands like Gackt, Abingdon Boys School, Miyavi, Dir en Grey, The Gazette etc

Lighter JRock : Bands like Asian Kung-fu Generation, The Pillows, Yui, NICO touches the Walls, FLOW, SID

 JPop/Jrock stuff like Yui, Ikimono Gakari, Sukima Switch, etc

Usually most bands that have done Anime Openings and endings aswell.

Anime Soundracks and Video Game soundtracks : Stuff like Fullmetal Alchemist, Sengoku Basara OST, Naruto Ost, Cowboy Bebop OST, Grave of Fireflies OST, Final Fantasy Soundtracks, Guilty Gear XX Ost etc.

Basically anything Japanese!! :P

I created a thread before and got recommended Audio Technica's like ATH-M50 and iBasso T3 for portable amp.

I think Audio Technica's would be good because they supposedly colour the mids which is most japanese music i've heard. Although apparently the ATH-M50s do lack a bit in mids so i was wondering if anyone else had any other suggestions. Also i'm not sure if they are portable enough to walk around with outside.

Looking at other threads for Jrock and JPop, the headphones reccommended were ATH-ES7 and Koss HP100 DJ. I've also read that Roland something 300 and Shure SH840 were better than ATH-M50 , although i'm not sure for JRock and other japanese music as japanese music is more vocally focused than western rock and metal.

I would like the headphones to be portable but i don't mind full size aslong as they aren't too huge to wear in public and walk with. The headphones i currently have now are Sony MDR-V150. They are ok , its just the bass is all mushy and there isn't much seperation or soundstage.

Most of my music collection is in 320 kbps with some flac files, but since finding out about this site and rockbox and plan to update my collection to mostly FLAC and buy an iPod 80Gb 5.5G and Rockbox it :)

I hope this is enough information. 

Thanks