I and several others have said this multiple times in this thread before: HD700 brings out the best and worst in recordings. A well-recorded, well-produced, uncompressed music file will sound amazing with the HD700, regardless of genre (although electronic music with tons of high frequency might sound bad). The opposite is also true. HD700 is very revealing of your entire chain, from the quality of music file, to your DAC, to your amp.
I can't stand listening to Red Hot Chili Pepper albums with HD700, even though I have ripped them to FLAC format from my CDs. I love RHCP but they're notorious for having terrible recordings. However with my other headphones and IEMs, I could listen to RHCP just fine. Most other FLAC files I own sound great with HD700, but my .mp3 collection and Google Music Play streaming doesn't sound nearly as good. Some songs even sound terrible due to the compression and quality of the recording.
I mostly use HD700 to listen to FLAC, movies / TV shows, and for gaming. My other headphones and IEMs are better suited for .mp3s and streaming music.