Well lads, I did a test in a nearby mediashop on Sunday. Audeo+grey filters+jay's tips(M) and also TDK IE800 (stock M tips) - I tested Galaxy S7 Exynos (non-edge), LG V10 and for comparision my LG L90. V10 and S7 with all the newest updates of the firmware/software (so Hi-Fi mode in V10 all the time).
The software used was Poweramp with flat eq (all effects off, of course) - the newest version of the standard one from google play on both S7 and V10, and poweramp alpha 7.03 on my L90. I used 2 Idlewild's tracks and Chopin Concerto No.2 (Zimerman+PFO). And to be honest... there wasn't much difference between the three. The S7 was a little bit better than my L90 - the bass had a little bit better range and maybe texture, also a little there was a bit more clarity, but you could feel the lack of power - surely due to the limitations of the software as I didn't have a problem with maxing the volume on both of my IEMs (32 Ohms both of them - Audeo balanced aramtures, IE800 dual membranes). Surely there wasn't any WOW difference between it and my L90... which is 2yo mid-ranger.
Similar story suprisingly with V10. Yes it's better than S7 and my L90, especially in terms of resolution, also the dynamic range feels better too. Also more juice is present but still I was able to hit max volume (75), although it was more painful than in S7 and L90.
Therefore I think the difference isn't stunning. Of course the environment was far from being perfect and I spent around 30mins between all 3 of them, so it's more like preview than review.
Also I have to admit that I have feeling that the Poweramp Alpha helped my L90 in this comparision and I'd love to hear both S7 and V10 with Alpha instead of standard Poweramp. Especially that both DACs - Cirrus and ESS are supported by Alpha...
But yeah... V10 is wayyy to big to me. And even S7 could be smaller for my taste.