Welcome to the forum.
Flex is always a difficult thing to compare. There is no standard for reporting flex, so it can only be compared relative to Salomon boots.
What I would suggest is: forget about the numbers, go by what they feel like, that's a more accurate way of saying what it is.
e.g. my old Salomon Evo2 8.0 boots had a flex of 80. My Tecnica Icon Alu Comps are rated 90.
One is pitched as an intermediate recreational boot, the other is described as an expert.
Looking in one of the UK catalogues, they compare the Tecnica (90) with the Crossmax 10 (110), or the Course Trans (120).
Go for the feeling!