Fischer audio eterna ( I had v1) probably have the most spacious and enveloping soundstage I have experienced on an IEM. Bass is aplenty ( too much and too bangin for me, but I believe it is toned down a fraction in v2 ) It is a rather warm IEM though, never heard any sibilance.
DDM soundstage has great depth and 3D imaging ( at least the way I percieved it) but not as spacious as eterna. Bass on DDM is even more enormous but detailed and organic, less headache inducing that eterna V1. Comfort on eterna was perfect for me, DDM great ..as long as you dont move.
HJE900 is another great option, nice soundstage, above average I'd say but not as enveloping as eterna nor as 3D as DDM, fast, punchy bass, very crisp treble ( DDM and eterna treble is smoothed out a bit) midrange on hje maybe a little thinly sandwiched between bass and treble, been a while since I had them so may be wrongish there. Comfort is good.
Also the humble PL30 has an extremely wide soundstage, the bass is about perfect to my ears, detail is good but it is a soft and quite warm sound, very relaxing IEM with no excessive sibilance to worry about.
Edited by pinkmoon1972 - 9/18/10 at 1:14am