Hi zebo42,
Thanks for the update … and it’s good to see you are looking at some good options.
This is a fairly common phenomenon because the same materials will often feel firmer to someone that is lighter than they will to someone that is heavier. It can also be a result of different weight distribution and different body shapes or sleeping positions or even a different sensitivities to pressure. There is more in the first part of post #2 here about accommodating a couple that have different needs and preferences.
I’m looking forward to finding out what you end up deciding.
Phoenix