Finally tried the H1,  H2, H3 and F886.

Source: AK100MK2.

H1 bass is quite bloated and a little loose. Not much control and tightness. Mids are a bit laid back and treble is not apparent at all. I wouldn't pay 499 for this..

H2 does much better. The bass is deeper, tighter and more controlled. Mids is not forward nor too behind. Warm and smooth presentation with little treble response. Definitely better than H1.

H3 has a more apparent treble presence. Bass is as deep, tight and controlled as the H2, though at times It feels that the H2 is slightly better at handling the bass. Mids has a more upper range presence and not as warm as H2. This gives better clarity and details compared to H2. Treble is more apparent and blends well making the H3 more versatile compared to H2.

Overall the H2 and H3 is quite enjoyable. Details and separation is definitely not on par with higher BA types like SE535 or W4R, but for those seeking for a good amount of bass without giving up some of the clarity and details from the higher frequency range, the H3 is not a bad choice.
However I do find them to be lacking in PRaT when it comes to fast paced songs.

That depends on the genre of songs you like and sound signature you prefer? What I hear might be different from what you hear.
but for me, given the price of H1 and H2 I'd take a look at other options before deciding.