Alright, so I'm with the Shenger G360 already, listening to some hip-hop, trap, dubstep and some metal. Generally, I can say they sound very good, but not so loud.
The sound is bassy. There's a lot of sub-bass you can actually feel in your ears. The vocals sound behind the kick drum, not muffled by it.
The overall sound signature is dark-ish, definitely not flat or bright. Those are pretty good for electronic music. They remind me of Plextone X41M, but with clearer mids and more gentle highs.
The maximum loudness is slightly disappointing, even with an amplified source it's nowhere near the loudness of the Plextone X41M, ROCK Zircon or KZ ED10.
I did notice quite a few random distortions here and there, not sure if it's the earphones or my source, but it doesn't seem to happen because of the bass, must be something else.
Also, you might need to use other tips (wide-bored) if you have issues with the included ones, they don't seem to fit my ears at all, completely no seal. Zircon's tips fixed that.
On a side note, psytrance sounds especially good with these.
I'm very optimistic about the G400, it should arrive soon and we'll see if it's any better.