Soldato
Personnaly I'd go all RCBO, but dual RCD is more or less standard spec for domestic (cost being king in new builds, etc) . all RCBO can offer you can advantage if you have lots of 'leaky' kit, i.e. computers, electronic devices in the kicchen etc, each bit of elakage pushes the device a little closer to tripping and if you have a lot, it can almost be on the point of tripping all the time, thats more common when a dual RCD board is used in a commerial office (pet hate) but for users of this forum, it might not be out the question to have a lot of gear.
Other things to consider... number of free ways, surge protection (starting to become standard a lot of the time), RCD type (you want type A, type AC is being moved away from) and make (can make a big difference to cost). I like putting Hager in, but you cant really ge wrong with the bigger brands, Hager, Wylex (the current range is pretty good, 10 years ago I'd have avoided them), Schnieder. CP Fusebox is popular amoung the social media sparkys and seems pretty good, and you can often do all RCBO for the price of dual RCD would be in hager. Some of the cheaper dual RCD boards (British general boards from screwfix, etc) might come with type AC RCDs and no free ways, no spd etc.
Other things to consider... number of free ways, surge protection (starting to become standard a lot of the time), RCD type (you want type A, type AC is being moved away from) and make (can make a big difference to cost). I like putting Hager in, but you cant really ge wrong with the bigger brands, Hager, Wylex (the current range is pretty good, 10 years ago I'd have avoided them), Schnieder. CP Fusebox is popular amoung the social media sparkys and seems pretty good, and you can often do all RCBO for the price of dual RCD would be in hager. Some of the cheaper dual RCD boards (British general boards from screwfix, etc) might come with type AC RCDs and no free ways, no spd etc.