I currently have the Shure SRH1540 and like the sound signature but was wondering if I am missing something. Everyone that I have heard says that planar magnetic bass is better than other dynamic cans. I was thinking about trying the he-400's but people say they have a V shaped frequency response but I don't like a lot of treble. I like forward, tight, controlled bass that goes low like the 1540's and mids that are forward but a little less so than the bass and then recessed highs. Can anyone give me a comparison between the Shure SRH1540's and the HiFiMan HE-400/400i/500?