◦ For how long have you been using it?

I just receive it and therefore I have a few hours of listening on, and this review will also subsequently amended, with more distance.

◦ Did you try many other models before getting this one?

Some Sennheiser and sonny, but it's been almost 8 years since I had a Sennheiser HD-490 and I obviously things change a bit.

◦ What thing do you like most/least about it?

The sound to me like very clean, very precise in the treble and midrange, the bass are not bad either, although I find them a little back. So be careful when mixing, but once accustomed ear I think we can no longer surprising.
In fact this headphone seems well balanced.
Small downside to the automatic muting, which can interfere if you have a small head (like me, it is set but it's just ..)
I also found the sound volume a bit tight, you still have to push for it to do so.

◦ What is your opinion about the value for the price?

For now it seems good.

◦ Knowing what you know now, would you make the same choice? ...

I'll say it later, with a little more perspective.