Same question different background. I'm trying to decide between these two myself and some input would be ducky.
Music: Electronic and Rock/Metal/Punk/stuff of similar genres. Classic rock, pop and some classical and solo guitar work makes it on the regular as well.
Source: right now just my laptop and my GS3, hence the want for a DAC. Most of my music is good rips and some lossless. If its a bad quality I tend to turf it.
Cans: Right now, Aiaiai TMA-1's and Etymotic MC5's. I will be getting something nice this summer for at home. HD59x, or maybe some DT770's. Will see whats around to try.
Portability isnt a huge factor since I can use my E6 with my phone and I'm not sure I'm a huge fan of banding the E07k to my phone all the time unless the difference is huge. For sound signature, I'm not picky. I tend to prefer warm/dark to bright/harsh. Current headphones are pretty dark though, so that might factor in.