Atlas has the bonus to build Material Kits directly from the base materials without any intervening steps, integrating the weight of multiple refineries that must also be accounted for, at the expense of extreme weight and bulk.  Tundra is the most compact and most suited for orbital use. Ranger is easiest to deploy, but requires additional Material kits and Machinery before it can actually be used (increasing the total weight and cost dramatically). Make sure that you are comparing each of
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