Should I purchase a TI-84 Plus or a Casio fx-9750G Plus?

Both calculators are suggested for pretty much the same courses (Casio has extra listed: AP Statistics & AP Calculus). Everyone I have talked to, including instructors, tell me that if I have never used the TI, I will pretty much need "a course" in how to use it. I have not heard anything about the Casio, probably because everyone is programmed to buy the TI. Have you used the Casio? How easy is it to use? Most of the reviews I've read say it's easier to use than the TI.