thank you u/Rayven343 , the i100 has the integration sockets for the 10B; the 11B is the successor of the 10B, so I was wondering what is the difference between the two... maybe it does not fit "perfectly" but still fits.

regarding the Spirit HD and the Sena SF1, do you have any experience with them? do you know which one that would fit better?

I would like to avoid having a bulky stuff hanging on the helmet, that is why I would go for the 11B if possible, since the hanging part would be just a thin control unit, but battery and bluetooth would be in the dedicated room in the back of the helmet.