If you focus more on defense, col is a good bet...If you want to progress through the library upgrades more, then notre dame is your choice. notre dame will get you to end game quicker but will not have end game benefits like the others have, keep that in mind.
I ended up going with the col because it gains benefit from the acropolis. Just my two cents
why do people focus on the passive benefits while not also recognizing the unique once-a-day power? The Colly gives you a HUGE daily powerup via strength of the glad. Combined with the German rally upgrade, one could make a very mean offensive build with this wonder.
I mean its nice yeah, but once a day makes it an after thought for me. So out of 20+ raids it will help with one for me to possibly get 50k more resources...kinda like an "oh shit" button.