Board Thread:Off-topic Discussion/@comment-108.235.170.203-20130425082053/@comment-5007614-20130425175753

Advanced Mills are way better from the get go, if you have the Nanopods to spend.

Advanced Mills have shorter jobs, and produce about 31% more product from the same amount of resources when compared to the normal mill, thus making better use of your Iron and Coal:


 * Steel Mill: 150 Iron + 50 Coal = 100 Steel
 * Adv. Steel Mill: 150 Iron + 50 Coal = 131 Steel (no such job exists, but illustrating its efficiency)

Also, constructing an Advance Mill only costs Nanopods - no other resources. If you built the normal Mill first, THEN upgraded to the Advanced version later, you've paid Gold, Concrete, etc. on top of the Nanopods.

Fortunately, the upgrade costs are the same, and no upgrades are lost when you convert to the Advanced Mill from a standard one.

If you actively play (fight, missions, repair, build), then you'll want the steel production to keep pace with your playing, otherwise the game will force you to stop playing and wait.

Personally, I stick with standard, upgraded mills because I have patience to wait on the iron and coal.