This set of fischer cans were labeled fun and natural, and also near monitor grade in this review. So I guess this is something that caught my attention. The low ends sounded quite similar to my GR07BE, but with a more forward mid range and better treble extension. Perhaps my only gripe with the FA-004 is that I find myself wanting to tune down that treble a little at times. A good description of my preferred signature would be something a little darker, or at least something with a nice bass response to balance the treble.
Budget? I'm keeping an open mind for now so go crazy i guess? IEM/CIEM are all good suggestions..
A bump in the bass with a darker monitor-type signature makes me think Westone UM3X or EarSonics, or even Sony MDR-7550, but none of those have better extension than a GR07 in the treble. Darker usually implies not only less treble energy, but less extension as well. Take the Westone ES5, for example - it's a top-tier custom with excellent bass and mids, but it doesn't have the reach of the GR07 in the treble. The JH13, on the other hand, has fantastic treble extension but it sounds energetic and probably is brighter than you would want. Have you tried applying some EQ to the midrange of the GR07 Bass to see if you can get it where you want it? Bumping up the mids should allow you to listen at lower volumes, reducing the treble intensity a bit.
HiFiman Re-400 vs VSONIC VC1000?
Tastes are: Heavy Metal/Speed Metal/Rock/Dubstep (Treble+Treble/mid_drops+Vocal tastes, groull also in there) and Bass_heavy-Dubstep (meaning high-quality bass drops with little_to_no treble). Of course, Dubstep may combine everything %) Just look at this band if interested - Medusa In My Knickers (- Pig, Pig 2, Check your knickers, Spit) (may be taken as an example of what i listen to). Not a bass-head, but still sympathize it much. Also as an example: Koven - Whoopi's back in the habit (Original Mix).
(sorry for your wallet ears :D)
Of course, wishing the best comfort I can get (not sure what a 0.5 difference means, i've read the descriptions).
Preferably, less leakage of sound.
And of course full satisfaction of tastes %).
There's a full RE-400 / VC1000 comparison in the VC1000 review.
In general they are both neutral-sounding earphones so if you want enhanced bass for your dubstep, look elsewhere. Personally, I would go for the less mid-focused VC1000 for rock and electronic music.