I still can't help but feel we've done Colosseum dirty, despite a top 10 finish. It's my second favorite wonder in the game. Gonna upvote my favorite this time, which I've sort of been holding off on because it's been set up pretty nicely...
Big Ben [7]
Forbidden City [20]
Kilwa Kisiwani [24]
Mausoleum at Halicarnassus [16]
Oracle [28]
Pyramids [31]
Big Ben [7] (10 -3): Big Ben gives you a lot of passive gold per turn, a lot of great merchant points, a crap-ton of gold for a one-time bonus, and an extra economic policy slot. All of these abilities are very, very good; I'm not about to debate that. However, there are two qualifications on Big Ben. One, it's a very costly wonder to produce and because of its placement requirements (basically next to an optimal CH), it's one that the AI will often try to beat you to. Out of all the wonders remaining, Big Ben is easily the least reliably built here. Secondly, this wonder is built in the Industrial Era, the latest wonder here as well. Generally speaking, the earlier a bonus comes in Civ VI, the better, since it better sets you up for the rest of the game. By the time you successfully build Big Ben, it's really only going to be around to push you over the finish line; you're already set up for success. Now granted, it's a very strong push, but I feel like it's not as useful compared to the rest of the wonders left, even if it's very useful. However, that smaller window is what separates a top 10 wonder from a top five wonder.
Pyramids [31] (30 + 1): Come on now. Was there EVER any doubt what wonder was going to finish first when we started this thread. No wonder is as powerful, pays for itself, and is consistently useful like the Pyramids. Getting a free builder on completion is decent enough, but getting EXTRA BUILDER CHARGES FOR THE REST OF THE GAME is just so absurdly powerful, and also consistently powerful, that there's no situation in which I wouldn't want to rush this wonder. I will build this wonder every game without a second thought. I will settle cities nearby at least one desert tile just to build this wonder. And getting a single desert tile is a limiting factor, but it's really not that hard to have at least one stray desert tile. It's the best wonder in the game. Hands down. It's just too good.