I am not familiar with this tent but i see that they have a core10 as well. same price on amazon as the 9: amazon.com/CORE-Person-Straight-Cabin-Orange/dp/B06X9G7Q5V/ref=asc_df_B06X9G7Q5V/
The divider is a nice feature, not sure about the other bells and whistles.
All these tents are basically the same on a comfort level. I enjoy tents with steeper sides and longer rain flys. But i live in a wet environment. For occasional use in moderate weather these tents should hold up several seasons. I would not think that 12 years is too short of a life for a family tent.
Edit: the walls on the 10 are straighter than the 9.
Edit2: Setup is much harder on the 10