Yes thanks makes sense, I should have been more specific about early game when you only have initial belts, but looks like the difference is cost + aesthetic only then.
Early game the main use is for underground to allow different belt lines to cross. Take a look at the standard green circuit setup 3 copper to wire assemblers direct feed into 2 iron + wire to green. It uses underground to move iron past the output.
For better belts upgraded when you need the speed. When your yellow can’t push enough product to feed your machines. Also better underground belts can go father between ends. 4, 6, 8 empty tiles for yellow, red, blue.
Yes thanks makes sense, I should have been more specific about early game when you only have initial belts, but looks like the difference is cost + aesthetic only then.
Early game the main use is for underground to allow different belt lines to cross. Take a look at the standard green circuit setup 3 copper to wire assemblers direct feed into 2 iron + wire to green. It uses underground to move iron past the output.
For better belts upgraded when you need the speed. When your yellow can’t push enough product to feed your machines. Also better underground belts can go father between ends. 4, 6, 8 empty tiles for yellow, red, blue.