Third day as owner of a c5 - using it as much as possible. Clear, well defined signal from it, wide soundstage. Was very happy with the HO from the DX50 until I got the c5, now I'm not sure I will ever go back.
Not gotten into the whole cable issue yet, but there are some interesting posts on here about that very subject.
Glad you're happy with it!
Hard to go back to unamped isn't it?