nice! but...
i dont know if i can rate you very highly on this one.. just because its so similar to the original. though the piano drop in this sample is pretty nice, i think you really need to differentiate this piece more than the original. mix up the main synth line a lot more, tear it to shreds! otherwise it just sounds like you took out their original dnb beat and replaced it with another dnb beat. also, it probably has to do with teh way you extracted the main synth line, but the mix in this sounds pretty tinny--pump up bass frequencies, and the levels of your kick, and perhaps layer the main synth with something to make it beefier. my 2 cents :)