Well most boards use the same design now , din rail mount MCBs and a bus rail that you cut to suit the split.
Yet some makers can still introduce annoying additions which are specially designed to wind us up.
I fitted one last month supplied by the customer from Screwfix , carp, some make I'd never heard of .
Crabtree Starbreaker is probably the easiest to fit and is quality but has a couple of drawbacks ,(a) It will only accept a Starbreaker device and (B) You are stuck with the split arrangement unless you carry spares ,otherwise its a trip to the supplier if it needs to be changed.
Hager is a quality product that I feel I can trust. (Made in France , a change from China)
Control Gear are cheap and appear to be the same as Square D , I,ve heard of no problems with them TBH.
I,ve gone back to Crabtree, Steeple, Wylex now as I can only assume Electrium have solved their quality control problems (I hope)