[Bengkia369]

Currently, my daily portable rig would be a Cowon iaudio 6 + Pico amp/DAC + Shure SE535 (sometimes Audio Technica ATH-CK7 or ATH-EW9 depending on mood).
I love the sound of my system but somehow my iaudio 6 is only limited to 4GB capacity. Anyone can intro me a DAP which is not too big and the same size of my Pico amp (must sounds great too)?
 
My rig tat I'm using now:-

 

 

 

[Kerberos]

The iaudio 7 would have been perfect for you since the form factor is the same that the iaudio 6 and it had up to 16gb of storage. But I think it's outdated now =( (I loved that player).
 
The sansa clip or fuze are small and very good sounding players and maybe suit your needs. They play ogg/flac too.
 
Sony daps are very good too. Small size, excellent sq and nice screen, but no ogg/flac support on them.
 
Good luck.