Ace
Emperor
IMHO, KRC is a nice to have wonder if nothing better is available. It does add 20 points to your score and, assuming a size 10 city, on average, it will take only 30 turns to get your 300 shields back. I tend to look at 2 other factors here, 1: let the AI build it, while I build a more desirable wonder, or 2: occasionally, you will get HBR and/or the Wheel as starting techs which can make an early push for Explosives very attractive.
At the lower levels, where happiness is not as big a problem as on Diety, going for Engineering vs Monotheism is a better choice. You will get the extra shields for more turns to add to other wonders.
At the lower levels, where happiness is not as big a problem as on Diety, going for Engineering vs Monotheism is a better choice. You will get the extra shields for more turns to add to other wonders.


I do not put Colossus at the top of the 28 wonders, but at lower levels of play, I'd put Great Library, Oracle, and even Lighthouse lower than Colossus. Even if you don't trade at all, Colossus will more than pay for itself... it does create worth, even if misused... something the Eiffel cannot do, & Oracle "normally" will not do at low levels. Possibly I'd even put MC below Colossus, at the lowest skill level, since MC could not "help" me in early and mid game like it must do at Diety.