Important to think about the future
Choosing the cheapest solution now may cost in the long run.
The fuse box or consumer unit is the center of your homes electrical system. It's a key element in the overall safety of the installation.
It's also the most likely item to be impacted when regulations change or new devices such as EV chargers are installed.
A good consumer unit design will be reasonably future proof and also keep circuits completely independent from each other, for example prevent a failed light impacting on other circuits.