This is my personal experience...
I live in Orlando and have been here since 1995. when Cirque opened La Nouba here in 1998 I said NO WAY, I am not paying that much to sit and see a show. No thanks, I don't care how good everyone says it is. In 2001 a friend of mine got tickets to see it and took me. I thought sure what the heck, it's free, might as well see what all the fuss is about. Well, I left there completely and totally mesmorized. Convinced that it was not humanly possibly to do half of the things that I just saw and wanting MORE. The time flew by and I wanted to see it again right then and there. Since then I have seen (and paid for) La Nouba countless times, Mystere, O, Ka, Zumanity, Dralion and Delirium all once, Alegria twice, Quidam three times and Varekai four times. I have a Cirque room in my house with merchandise that I have bought along the way and recommend the show to everyone I see. As you can see my screen name is CDSTapisRouge which is (Cirque Du Soleil Red Carpet...Tapis Rouge is the name of the VIP area at the touring shows).
Having been in your position I know exactlly what you are contemplating with. I know that it seems like a lot of money, but it is worth every penny and then some. A little advice, don't think you have to go all out and buy the $120 seats. There are no bad seats in the La Nouba theater. You can get great seats in Cat 3 for much less...
So I say go see it, it is awesome!