I would suggest -O-. It was the first one I saw, have seen it 2 more times. I have seen I think 5 others there in LV, a few multiple times. -O- is stunning! And I do think there is no in between with Cirque. People either really like it (I do) or they don't (Marie does not). I've also seen LaNouba (now gone) at WDW, I think 3 times.
Best seating for all Cirque shows is midway up from the stage. Even though they sell the closer seating as premium, with prices to match, much of a Cirque show is high up in the theater. If down close, you are breaking your neck for much of the show, looking up. Midway is the best, and recommended my the far majority of Cirque attendees.
Enjoy.
Sections 202, 203 and 204 are great. Sections 102 and 104 should be the same price as 202-204, but down too close to the stage.
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