I recently received my Hidizs MS4 from the Kickstarter campaign, so I will be comparing this first set of songs mostly between those two. I have a set of FiiO FH5 (for sale!), Sony XBA-N3, Audeze iSine 20, and Whizzer Kylin A-HE03. Yes, I have a preference for hybrid or planar magnetic sound. I listen to a wide variety of music, but mostly rock, metal, classical, blues, and some electronic/darksynth. Madness by Muse. It has a heavy bass line, but it must not overwhelm Bellamy's voice. The Hidisz MS4 and the FiiO FH7 both do the beat justice, with neither blasting past the vocals. The MS4 is definitely boomer. The defining point with definition is at 03:44 when Bellamy just soars vocally, with backing vocals. The FH7 is much more defined there, chillingly so. The MS4 is quite good but just slightly less defined; the bass is more emphasized which has its own appeal. The hybrids deliver better impact on the song over some BA-only I've sampled. Fly for Your Life by GUNSHIP. The bass in the MS4 will knock your eardrums about. At 03:40, the drums pan from left to right as an airplane flies overhead. The bass from the FH7 is less pronounced compared to the head rattling the MS4 deliver. Workin' Them Angels by Rush. Again, the MS4 will work you over with the bass delivery courtesy of Peart and Lee. It's not completely over the top, nor does it overwhelm Lifeson or vocals. The FiiO FH7 sounds restrained after listening to the MS4 - and it reminds me how less crisp the FH5, a fine set on their own, sound. The FH7 and MS4 deliver a different sound, and I personally can appreciate both. Unsainted by Slipknot. Bass is much tighter and faster on the FH7 with less boom and more snap than on the MS4. Vocals - might actually be a little less forward on the FH7 but not recessed. Will have to keep listening and A/B testing.