I too am looking for a top quality (SQ-wise) DAP to partner my Monster MDT and JVC FX700 IEMs. I already own an iPhone 4 (with Equ app) and Rockbox'd Clip +.
Having owned a RSA Shadow with LOD in the past i'm looking for something with comparable audio quality and drive, without having to resort to carrying around a portable amp.
I am considering the following DAPs at the moment, but i've not heard any of them and i'm unsure what would be the best solution:
Hifiman HM601 - Supposedly sounds great and I like the digital out, but worried out reliability from some comments i've read.
Sony X Series - Looks great, a bit expensive used considering they're no longer a current model.
Cowon J3 and S9 - Like the BBE EQ, battery life and HDSC card slot.
Nationite N2 - Cheap price, portable and supposedly powerful with good sound. Does it really compare to the other players on my list SQ-wise?
Is there anything else I should consider - what would you go for please?
Thanks
Phil