I will say, I saw right through several big "reveals" and "plot twists" where I was thinking "I bet that..." and was right.

In a couple things, it was a twist I didn't foresee.

I enjoyed seeing Tony Stark as opposed to all Iron Man suits. There has been jibs about Iron Man just being a big old gadget and not a hero. This movie should set that to rights.

I will say I've never been an Iron Man fan so I have no prior knowledge of plots or characters, so if they messed up the Mandarin, or did something differently from the comic-verse, it wouldn't bother me, but I understand that original fans WILL be bugged majorly. I have that issue with GI Joe movies and such too.