Terraforming Large Empires: Regular Farms/Mines/Nets vs Advanced??

[Augustus]

I am a veteran civ player and CTP player...and this kind of stumps me...

Once you get advanced Farms/Mines/Fisheries is it a good strategy from there on out to build only advanced Farms/Mines/Fisheries? Or do you use regulars until most of your empire is filled out with..then start going over the regular farms/mines/nets with advanced farms/mines/fisheries.

Or do you only use the latest advanced Tech...which means you will save yourself public works money because you will not be planting over all your regular stuff with advanced stuff. I also dont know exact formula to computing city radius production/growth (only generally that a % of each square is in play) and if one approach is hands down the best way according to new formula.

[Sarxis]

Yeah, it's difficult to know exactly what to do with tile improvements, but pg. 34 of the manual, under 'Citizens & Workers', is a good place to start collecting info.

[Thanx to Mark G for pointing this one out in another post.]