The mechanical build quality is very nice. The jacks and switches appear to be very good quality. The case is very sturdy and the battery cover is a nice touch. The documentation is simple and complete. Nice touch with the cables and the "feet". This is exactly what I expected.
I stuffed some lower bandwidth photos up on flickr:
I have not listened much yet but it does seem to tame the 770 a bit. Will have to keep burning things in and listen with the E5c.