Heavy block are good. They are protective and heavier than regular armor but they are expensive. And making planetary bases needs a lot of them for protection beacuse you cant move base.
The impact armor would be more protective than heavy armor and cheaper but a lot heavier like 4-6 times. You will make it from steel plates, griders and gravel.(more use for gravel wich is pretty ussles)
Armor dedicated for non movable grids built on surface.